TIGER

Assessment Questions: 79 results
Biochemistry : Anomer (20 Variations)
Classify each of the following monosaccharides as the or anomer.
Carbohydrates
Carbohydrates (17 Variations)
A collection of 17 assessment questions about Carbohydrates
Carbohydrates |
Reactions |
Enantiomers |
Diastereomers |
Oxidation / Reduction |
Synthesis
Biochemistry : Disaccharide (20 Variations)
Classify each of the following disaccharides as having an or glycosidic bond.
Carbohydrates
Biochemistry : Carbform (20 Variations)
Which of the following molecules could be a carbohydrate?
Carbohydrates
Biochemistry : NotCarb (16 Variations)
Which of the following is NOT a function of carbohydrates in the cell?
Carbohydrates
Reactions : GeneralRxnType (10 Variations)
Identify each of the following statements as describing a combination, displacement, decomposition, or exchange reaction.
Reactions
Reactions : GeneralChemRxn (4 Variations)
In a balanced chemical equation

Check all that apply.


Reactions
Reactions : NanoPicOfProducts (14 Variations)
The diagram below is representative of a tiny portion of a reaction between ammonia and methane. Which of the diagrams below represents the product mixture?


NH3(g) + CH4(g)HCN(g) + 3H2(g)


Reactions
Reactions : PredictProducts (10 Variations)
Predict the product(s) of the following displacement reaction.

TiCl4 + 2Mg


Reactions
Reactions : ReactionType (9 Variations)
The reaction Mg + 2HCl MgCl2 + H2 is an example of a(n)
Reactions
Stoichiometry : EmpirFormulaFromRxn (10 Variations)
When one mole of a diatomic gas, Y2(g), reacts with one mole of hydrogen gas, neither gas is left over. What is the empirical formula of the compound formed?
Stoichiometry |
Reactions
Stoichiometry : GeneralMassMole (4 Variations)
10.0 g of nitrogen monoxide is reacted with 10.0 g of oxygen to form nitrogen dioxide. Which of the following statements is true?
Stoichiometry |
Reactions
Stoichiometry : RxnNanoPics (4 Variations)
The following diagram shows a compound reacting to form products. Which equation best describes the stoichiometry of the reaction shown in the diagram?


Stoichiometry |
Reactions
Gases : RadicalGasRxns (17 Variations)
Complete the following reaction. (All reactants and products are gases.)
NO2 + NO3

Gases |
Reactions
Reactions : MetalActivitySeries (10 Variations)
Predict whether the following reaction will occur in aqueous solution.

Zn(ClO3)2(aq) + Ni(s)


Metals |
Reactions
Stoichiometry : BalanceRxn (14 Variations)
The reaction of methane with oxygen has the following unbalanced equation

CH4(g) + O2(g) CO2(g) + H2O(l)

The coefficient for oxygen in the balanced equation is ...


Stoichiometry |
Reactions
Stoichiometry : DiagramRxnProds (6 Variations)
According to the law of conservation of matter, which of the following diagrams represents possible products of the following reaction?

A2 + 2B2


Stoichiometry |
Reactions
Stoichiometry : DeterMolesInRxn (4 Variations)
The reaction of zinc with aqueous hydrochloric acid has the following unbalanced equation

Zn(s) + HCl(aq) ArrowZnCl2(aq) + H2(g)

When 0.1 moles of zinc is reacted with 0.1 moles of hydrochloric acid ...


Stoichiometry |
Reactions
Stoichiometry : TheorYieldDeviation (10 Variations)
You reacted a known amount of phosphorous triiodide with excess water and determined that the percent yield of phosphoric acid was less than 100%, which of the following statements could explain why?
PI3 + 3H2O H3PO3 + 3HI

Stoichiometry |
Reactions
Stereochemistry (21 Variations)
A collection of 21 assessment questions about Stereochemistry
Stereochemistry |
Conformational Analysis |
Chirality / Optical Activity |
Alkanes / Cycloalkanes |
Alkenes |
Alcohols |
Enantiomers |
Diastereomers |
Carbohydrates |
Carboxylic Acids |
Nomenclature / Units / Symbols |
Esters
Matter_and_Measurement : PhysOrChemChange (10 Variations)
Which of the following are physical changes?
Physical Properties |
Reactions
Reactions : RedoxAgents (10 Variations)
Identify each of the following as a reducing agent or an oxidizing agent.
Oxidation / Reduction |
Reactions
Reactions : AcidBaseRxns (20 Variations)
In order to answer the following questions, write the net ionic equation for the reaction between equal volumes of 0.10 M solutions of the following acid and base:

KOH(aq) + HBr(aq)

What are the reaction products? Does the reaction yield an acidic, basic, or neutral aqueous solution?


Acids / Bases |
Reactions |
pH
Reactions : NotRedoxRxn (4 Variations)
Which of the following is a NOT a redox reaction?
Oxidation / Reduction |
Reactions
Reactions : PredictRxnProducts (5 Variations)
What are the most likely products from the reaction of aqueous sulfuric acid and aqueous sodium hydroxide?
Aqueous Solution Chemistry |
Reactions
Stoichiometry : ExplainYldError (4 Variations)
Your TA gives you an aqueous solution containing an unknown quantity of AgNO3(aq) and an unknown quantity of Mg(NO3)2(aq). You are asked to determine the molarity of Ag+ in the solution. You add HCl(aq) to your unknown to precipitate the silver as AgCl(s), then filter out the precipitate, dry it, weigh it, and calculate the concentration of silver ion. However, your TA tells you that your calculated value of [Ag+(aq)] is lower than the actual value. Which of the following could account for your answer being too low? There may be more than one correct answer.
Stoichiometry |
Reactions |
Chemometrics
Stoichiometry : PrecipYield (3 Variations)
In a laboratory experiment to determine accurately the amount of barium in solution, aqueous sulfuric acid was added to the solution to precipitate barium sulfate, which was then filtered and weighed. In this experiment it is MOST important that ...
Stoichiometry |
Reactions |
Chemometrics
Lipids (2 Variations)
A collection of 2 assessment questions about Lipids
Steroids |
Reactions |
Lipids |
Esters
Reactions : BalanceIonEquation (10 Variations)
What is the balanced net ionic equation for the following reaction:

AgNO3(aq) + HCl(aq) AgCl (s) + HNO3(aq)


Aqueous Solution Chemistry |
Reactions
Stoichiometry : GivenYieldCalcStMat (4 Variations)
Calcium oxide and water are produced by heating calcium hydroxide. If the reaction has an expected yield of 60%, how much calcium hydroxide should be reacted to produce 115g of calcium oxide?

Ca(OH)2 CaO + H2O

Stoichiometry |
Reactions |
Chemometrics
Stoichiometry : MolsO2ToReactFuel (10 Variations)
Butane can be used as a fuel. How many moles of oxygen are needed to completely react with 3.0 moles of butane?

The unbalanced reaction equation is given below:
C4H10(g) + O2(g) CO2(g) + H2O(g)


Stoichiometry |
Reactions |
Chemometrics
Stoichiometry : RxnMolsProduced (8 Variations)
Given the following balanced chemical reaction:
4A + 3B2 2A2B3
If 12 moles of A are reacted with excess B2, how many moles of A2B3 will be produced?
Very carefully enter the number below.

Stoichiometry |
Reactions |
Chemometrics
Thermodynamics : ATPFromGlucose (8 Variations)
When glucose is oxidized in the human body it releases a lot of Gibbs free energy. Rather than waste this free energy, the body stores much of it in the form of ATP. The following reaction shows this process of storing some of the energy from glucose in ATP. This is an example of coupled reactions in a biological system.

The label on a can of Coke says that it contains 39 g of sugar. Assume that all of the sugar is glucose (even though it isn't), and calculate how many moles of ATP can be produced theoretically by the oxidation of 39.0 g of glucose.

Thermodynamics |
Reactions |
Chemometrics
Stoichiometry : GivenMassCalcStMat (10 Variations)
Aspirin is a common analgesic. If you want to produce 250. mg of aspirin (C9H8O4) from the reaction of C7H6O3 and C4H6O3, what is the minimum amount of C7H6O3 that is needed?

2C7H6O3(s) + C4H6O3(l) 2C9H8O4(s) + H2O(l)


Stoichiometry |
Reactions |
Chemometrics
Stoichiometry : RxnTable (10 Variations)
Iron reacts with oxygen to form iron(III) oxide according to the following reaction.

4Fe(s) + 3O2(g)2Fe2O3(s)


Fe(s) O2(g) Fe2O3(s)
Initial Amount - - -
Change - - -
End Amount - - -

Complete the reaction table for a reaction mixture containing 12.0 moles of iron and 10.0 moles of oxygen, and select the true statement(s) from following list.


Stoichiometry |
Reactions |
Chemometrics
Stoichiometry : SolnStoich (4 Variations)
You are working in a forensic lab and are given a blood sample from a suspected drunk driver and asked to determine the person's blood alcohol level. The legal limit is 0.08% by mass in most states. You use the following reaction in your determination, assuming only the ethanol (C2H5OH) in the blood sample will react with the dichromate.
16H+(aq) + 2Cr2O72-(aq) + C2H5OH(l)4Cr3+(aq) + 11H2(l) + 2CO2(g)

If 14.6 mL of 0.10 M K2Cr2O7 are needed to react completely with 28 g of blood, what is the blood alcohol level of the driver?


Stoichiometry |
Reactions |
Chemometrics
Alkenes (16 Variations)
A collection of 16 assessment questions about Alkenes
Alkenes |
Reactions |
Nomenclature / Units / Symbols |
Stereochemistry |
Addition Reactions
Aldehyde and Ketone Addition (2 Variations)
A collection of 2 assessment questions about Aldehyde and Ketone Addition
Aldehydes / Ketones |
Acids / Bases |
Reactions
Organic : PredictProductEster (10 Variations)
Which ester will be formed by the following reaction?

Esters |
Reactions |
Carboxylic Acids |
Alcohols
Epoxides (5 Variations)
A collection of 5 assessment questions about Epoxides
Epoxides |
Reactions |
Oxidation / Reduction |
Synthesis
Reactions : ExchangeRxn (10 Variations)
Which of the following compounds would result in an exchange reaction if mixed in an aqueous solution with Ba(OH)2?
Aqueous Solution Chemistry |
Reactions |
Precipitation / Solubility
Sulfur Chemistry (3 Variations)
A collection of 3 assessment questions about Sulfur Chemistry
Organosulfur Compounds |
Lewis Structures |
Reactions |
Synthesis
Acids_and_Bases : IonizationSteps (20 Variations)
Citric acid (which is a triprotic acid) has the following structure:

Which of the following equations corresponds to the first ionization step of the acid?

Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : MolcScaleAcidBase (10 Variations)
Study the four drawings below and then decide which best represents an aqueous solution that has

(Water molecules are not shown in the diagrams.)


Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : ConjugateAcidBase (20 Variations)
Identify the acid and base that are reactants and the conjugate acid and conjugate base that are products in the following equation:
HI(aq) + H2O(l)  H3O+(aq) + I-(aq)

Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : HendersonHassel (20 Variations)
You may want to use the following acid/base table to answer the question below.

Papain is a thiol protease isolated from papaya. The optimal pH for its enzymatic activity is 6.0-7.0. Which of the following buffering systems would work best for a laboratory experiment requiring active papain at pH 6.5? What molar ratios of the compounds would you use to prepare the solution?


Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : IDLewisAcidBase (20 Variations)
Which of the following is a Lewis acid?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : ReactProductFavored (20 Variations)
You may want to use the following acid/base table to answer the question below.

Which of the following reactions will be product -favored?


Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : WeakStrongAcidPics (11 Variations)
Which diagram best represents an aqueous solution of HCl? (Water is not shown.)


Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : ChooseIndicator (8 Variations)

A 25.0 mL aliquot of a 1.44M solution of ammonia (Kb = 1.8 x 10-5) is titrated with 1.50M HCl. Use the Indicator Table below to decide which of the indicators listed would most accurately signal the equivalence point for this titration.

Write the letter corresponding to your choice of indicator in the box.


Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH
Acids_and_Bases : SolnGrams (20 Variations)
How many grams of sodium hydroxide (NaOH) must be dissolved in 510 ml of water to make a solution with a pH = 8.1?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH
Reactions : IDSampleRxnVideo (7 Variations)
You have an unknown aqueous sample. You add aqueous copper(II) sulfate to the sample. View the video below and determine which of the compounds listed below could be your sample.


Aqueous Solution Chemistry |
Reactions |
Precipitation / Solubility
Acids_and_Bases : ProtonTransferRxn (20 Variations)
Write an equation to describe the proton transfer that occurs when the following acid is added to water: HSO4-
Enter the products in the space below using the following as an example:
What ions are present in an aqueous calcium nitrate solution?
Ca(NO3)2(aq) Ca2+(aq) + 2NO3-(aq)
In this case, the answer would be: Ca2+(aq) + 2NO3-(aq)
You should enter: Ca^(2+) + 2NO3^(-)
In other words, use the ^ to indicate superscripts; put charges in parentheses; and leave a space on either side of the + sign. Your answer must be an exact match for the computer to grade it correctly, so be careful.

What products will result when HSO4- is added to water?

Acids / Bases |
Reactions |
Aqueous Solution Chemistry
AcidBaseProducts (10 variations)
The following acid/base table may be useful in answering the question below.

What products will result when HSO4- is added to water? Complete and balance the reaction below.

HSO4- + H2O ?


Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : AcidBaseProperties (10 Variations)
Which of the following are properties of HCl?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : AcidicOrBasicSalt (20 Variations)
When dissolved in an aqueous solution, which of the following salts will yield an acidic solution?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
Acids_and_Bases : PercentDissociationKa (3 Variations)
Calculate the percent dissociation in a {x}M aqueous solution of the weak acid HA. (Ka = {y} x 10-4)

Enter your answer to ONE decimal place.
DO NOT use scientic notation.
DO NOT write in the units.


Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Equilibrium
MO Theory (11 Variations)
A collection of 11 assessment questions about MO Theory
MO Theory |
Reactions |
Addition Reactions |
Free Radicals |
Alkenes |
UV-Vis Spectroscopy
Alkenes and Alkynes (31 Variations)
A collection of 31 assessment questions about Alkenes and Alkynes
Alkenes |
Addition Reactions |
Alkynes |
Carbocations |
Stereochemistry |
Reactions |
Nomenclature / Units / Symbols |
Alcohols |
Epoxides |
Oxidation / Reduction |
Grignard Reagents
Esters (8 Variations)
A collection of 8 assessment questions about Esters
Carboxylic Acids |
Esters |
Reactions |
Alcohols |
Aldehydes / Ketones |
Oxidation / Reduction
Acids_and_Bases : TitrationCurveKaKb (8 Variations)
Study the graph of the titration of a weak acid with a strong base shown below. What is the approximate Ka for this acid?


Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
Acids_and_Bases : LewisAcidBaseRxns (19 Variations)
Identify the Lewis Acid and Base in the reaction of Ag+ and NH3 to form Ag(NH3)2+
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Lewis Acids / Bases
Acids_and_Bases : PracticalAcidBase (20 Variations)
Which of the following statements is true?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Physical Properties
Acids_and_Bases : WaterAutoIonization (20 Variations)
What effect will the addition of H2CO3 have on the autoionization of water?


Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Water / Water Chemistry
Acids_and_Bases : WeakAcidSolnpH (20 Variations)
Given an aqueous solution of 0.30 M acetic acid (Ka = 1.8 x 10-5), the pH is approximately ...
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : BufferingCapacity (20 Variations)
If a buffer is prepared using 0.75 mol CH3COOH and 0.45 mol CH3COO- in 1 liter of aqueous solution, is the buffering capacity of the solution great enough to maintain its pH if 10 g NaOH is added?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : pHDilution (6 Variations)
What is the pH of a solution made by diluting {x} mL of {y} M HNO3(aq) to a total volume of 500 mL?

Enter your answer to two decimal places.
DO NOT use scientific notation

Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : pHBufferCalc (4 Variations)
Calculate the pH of a buffer solution containing {x}M NH3 and {y}M NH4NO3.

Enter your answer to TWO decimal places.
DO NOT use scientific notation.
DO NOT enter units
        eg:     4.55

Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : BufferWeakStrong (7 Variations)
How many mL of a 2.50 M HCl solution must be added to 500 mL of a 0.150 M CO32- solution to make a buffer with pH = 10.00?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : CalcSolnpH (5 Variations)
Use this acid/base table to answer the question below.

Calculate the pH of a {x}M sodium acetate solution.

DO NOT use scientific notation
Enter your answer to two decimal places.
DO NOT enter units

Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Acids_and_Bases : BufferWeakWeak (14 Variations)
What mass of potassium bicarbonate (KHCO3) must be added to 500 mL of a 0.200 M carbonic acid solution to make a buffer with pH = 6.30?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
Alkanes (22 Variations)
A collection of 22 assessment questions about Alkanes
Alkanes / Cycloalkanes |
Conformational Analysis |
Nomenclature / Units / Symbols |
Lewis Structures |
Stereochemistry |
Reactions
Carboxylic Acids (14 Variations)
A collection of 14 assessment questions about Carboxylic Acids
Carboxylic Acids |
Acids / Bases |
Esters |
Amides |
Reactions |
Synthesis |
Grignard Reagents |
Ethers |
Oxidation / Reduction |
Alkenes |
Heterocycles |
Amines / Ammonium Compounds |
Aldehydes / Ketones
Functional Groups (9 Variations)
A collection of 9 assessment questions about Functional Groups
Reactions |
Amines / Ammonium Compounds |
Alkanes / Cycloalkanes |
Conformational Analysis |
Nomenclature / Units / Symbols |
Aldehydes / Ketones |
Carboxylic Acids |
Amides |
Ethers
Phenols and Aryl Halides (9 Variations)
A collection of 9 assessment questions about Phenols and Aryl Halides
Phenols |
Acids / Bases |
Reactions |
Alcohols |
Amines / Ammonium Compounds |
Carboxylic Acids |
Aromatic Compounds |
Ethers |
Alkylation |
Synthesis |
Esters |
Electrophilic Substitution
Acid Base (44 Variations)
A collection of 44 assessment questions about Acid Base
Acids / Bases |
Carboxylic Acids |
Alcohols |
Phenols |
Reactions |
Alkanes / Cycloalkanes |
Aldehydes / Ketones |
Esters |
Alkenes |
Alkynes |
Amines / Ammonium Compounds |
Ethers |
Lewis Acids / Bases |
Amides |
Amino Acids
Amines (30 Variations)
A collection of 30 assessment questions about Amines
Amines / Ammonium Compounds |
Synthesis |
Acids / Bases |
Reactions |
Amides |
Electrophilic Substitution |
Stereochemistry |
Carboxylic Acids |
Oxidation / Reduction |
Aldehydes / Ketones |
Alkanes / Cycloalkanes |
Dyes / Pigments |
Grignard Reagents
Oxidation Reduction (21 Variations)
A collection of 21 assessment questions about Oxidation Reduction
Oxidation / Reduction |
Esters |
Oxidation State |
Reactions |
Aldehydes / Ketones |
Alcohols |
Carboxylic Acids |
Alkynes |
Alkenes |
Alkanes / Cycloalkanes |
Aromatic Compounds |
Phenols |
Amides |
Amines / Ammonium Compounds
Organometallic (13 Variations)
A collection of 13 assessment questions about Organometallic
Organometallics |
Grignard Reagents |
Epoxides |
Alcohols |
Esters |
Alkanes / Cycloalkanes |
Aldehydes / Ketones |
Synthesis |
Ethers |
Aromatic Compounds |
Reactions |
Carboxylic Acids |
Alkenes |
Amines / Ammonium Compounds |
Acids / Bases |
Alkynes