49 Results
Refining of Copper   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Aluminum Production   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Electrolysis   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
The Electron   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Ions in Solution (Electrolytes   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Quantitative Aspects of Electrolysis   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Electroplating   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Electrolysis of Brine   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Electron Density and Potential Energy   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Potential Energy   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Coulomb's Law   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Overvoltage   
(Movie/Animation, Audio/Visual (9))
Zinc metal reacts with hydrochloric acid, generating hydrogen gas. However, when a strip of nickel, copper, platinum or lead is placed in hydrochloric acid, no reaction is observed.
Solid Producing   
(Movie/Animation, Audio/Visual (6), Movie/Animation (1))
Electrolysis of solutions in which a solid is produced is shown.
Gas Producing   
(Movie/Animation, Audio/Visual (6), Movie/Animation (1))
Electrolysis of solutions with only gas(es) produced is shown.
Oxidation-Reduction (Redox) Reactions   
(Movie/Animation, Audio/Visual (5))
Demonstrations exploring oxidation/reduction chemistry.
Electrolysis   
(Movie/Animation, Audio/Visual (4))
Various examples of electrolysis are presented.
Metal-Iodine Reactions and Cells   
(Movie/Animation, Audio/Visual (4))
Electrochemical reactions are demonstrated and then used to do work.
HCl, NaOH, NaCl and Water   
(Movie/Animation, Audio/Visual (4))
Electrolysis of HCl, NaOH and NaCl solutions and of water is shown.
Electrolysis of Aqueous Solutions -- New   
(Movie/Animation, Audio/Visual (4))
This is a revised version of the previously published Electrolysis of Aqueous Solutions, providing corrections and additional images. In order to understand most of these videos it is important to either see the Complete Experiment: Electrolysis of an Aqueous Solution video or to be able to read a description of that video (such as the one in the Discussion section for that video).
Electrolysis-Water   
(Movie/Animation, Audio/Visual (3))
This experiment demonstrates the electrolysis of water.
Electrolysis of Aqueous Solutions -- Original   
(Movie/Animation, Audio/Visual (20), Movie/Animation (2))

Electrolysis of several aqueous solutions is carried out using a 9-V battery and pencil leads as electrodes. Because only the electrodes are shown in the videos, it is important to show these still images

 

or describe how the reactions were performed if students are to make sense of the videos. In each case the anode is on the left and a 9-V battery has been connected to the lead of each of the pencils near the eraser end with an alligator clip.

A newer version of most of these reactions using platinum electrodes is available as Electrolysis of Aqueous Solutions -- New.

Tin Compounds   
(Movie/Animation, Audio/Visual (2))
Electrolysis of tin(II) and tin(IV) solutions of different concentrations is shown.
Electrochemistry   
(Movie/Animation, Audio/Visual (12))
Reactions exploring electrochemical concepts.
Electrochemical Series: Metal Trees   
(Movie/Animation, Audio/Visual (11))
A piece of metal (Cu, Zn, Ag, Cd, or Pb) is placed in an aqueous solution of a metal ion (Cu2+, Zn2+, Ag+, Cd2+, or Pb2+). In some cases the growth of metal crystals indicates that a chemical reaction has occurred.
Electrolisis 3 (GCMP)   
(Interactive Simulation, Software (1))
Electrolisis of Water #3: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Electrolisis 2 (GCMP)   
(Interactive Simulation, Software (1))
Electrolisis of Water #2: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Electrolisis 1 (GCMP)   
(Interactive Simulation, Software (1))
Electrolisis of Water #1: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Electrochemistry (Netorials)   
(Instructional Material (1))
Electrochemistry: this is a resource in the collection "Netorials". This modules about electrochemistry includes topics such as oxidation-reduction and half reactions, voltaic and electrolytic cells, standard cell potentials and batteries. The Netorials cover selected topics in first-year chemistry including: Chemical Reactions, Stoichiometry, Thermodynamics, Intermolecular Forces, Acids & Bases, Biomolecules, and Electrochemistry.
Electrochemistry : BatteryDesign (8 Variations)   
(Assessment Material (1))
Students are attempting to construct a battery in the laboratory that will light up a light bulb. Compare the following lists prepared by students and determine which student will not be able to successfully build a "battery" that will light up the bulb.
Electrochemistry : BalanceRedoxRxn (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Magnesium reacts with nitric acid to form magnesium nitrate and nitrogen monoxide in an acidic aqueous solution. Write the balanced equation for this reaction.

Electrochemistry : FuelCellsAndBatteries (20 Variations)   
(Assessment Material (1))
Determine whether the following descriptions are characteristic of fuel cells, primary batteries, secondary batteries or both batteries and fuel cells.
Electrochemistry : ElectrolysisCalcs (20 Variations)   
(Assessment Material (1))
Calculate the mass of gold that could be plated from a solution with a current of 0.40 A for 22 min.

Au3+(aq) + 3 electrons Arrow Au(s)

Electrochemistry : ECellObservations (20 Variations)   
(Assessment Material (1))

Consider the electrochemical cell diagram shown below. As you observe the reaction in the cell, you notice that the tin electrode seems to be disappearing while there are deposits forming on the silver electrode. Which of the following is a correct statement?

Electrochemistry : BatteryHalfRxns (20 Variations)   
(Assessment Material (1))
The two half-reactions for the LeClanche dry cell battery are shown below. Identify the oxidizing and reducing agents in this cell.

Zn(s) Arrow Zn2+(aq) + 2e-
2NH4+(aq) + 2e- Arrow 2NH3(g) + H2(g)

Electrochemistry : ElectrolysisHalfRxns (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

What will be the products of the electrolysis of an aqueous solution of Tin (II) sulfate (SnSO4)? (The electrodes themselves are platinum.)

Electrochemistry : IDRedOxAgents (20 Variations)   
(Assessment Material (1))
In the following balanced reaction, identify the oxidizing and reducing agents.

Fe + Fe2(SO3)3 Arrow 3FeSO3

Electrochemistry : IDHalfRxns (20 Variations)   
(Assessment Material (1))
What are the half-reactions for the reaction of Cs and Cl2 in the formation of CsCl2?

Cs + Cl2 Arrow CsCl2

Electrochemistry : CalcInterpretEo (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Consider a cell composed of the following half-reactions. Determine the magnitude of E° for the cell and decide whether the reaction will be product-favored or reactant-favored as written.

Cr(s)  Cr3+(aq) + 3e-
Ce4+(aq) + e-  Ce3+(aq)

Electrochemistry : SacrificialAnode (10 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

One method for protecting metals against corrosion is to connect the metal directly to a "sacrificial anode". This is the method used to protect pipelines and ships hulls. Which of the following metals would you consider the best candidate for a sacrificial anode for a ship's hull? The hull is steel (which is mostly iron).

Electrochemistry : GeneralElectrochem (20 Variations)   
(Assessment Material (1))
Which of the following statements is not correct?
Electrochemistry : GeneralCorrosion (10 Variations)   
(Assessment Material (1))
Which of the following statements not is true?
Electrochemistry : CalcStandRedPotential (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Calculate Eo for the following balanced reaction.

Fe(s) + Fe2(SO3)3(s) Arrow 3FeSO3(s)

Electrochemistry : CalcDeltaGfromE (20 Variations)   
(Assessment Material (1))
The following electrochemical data may be helpful in answering the question below.

Calculate the dGo for the oxidation of 2 mole of silver in the following balanced reaction.

2Ag(s) + CaI2(aq) a Ca(s) + 2AgI(s)

Electricity   
(Activity, Instructional Material (9))
ACS Science for Kids activities that explore the properties of electricity.a
ChemPaths 104 W May 4   
()
Today in Chem 104: * Lecture: Electrochemistry; Electrolysis, Corrosion * Reading: Kotz: Ch. 20, Sec. 7-8 Moore: Ch. 19, Sec. 11-13 * Homework #12 due by 11:55 PM F May 6 * No quiz this week * Lab this week is #8, Redox Titration
ChemPaths 104 M May 2   
()
Today in Chem 104: * Lecture: Electrochemistry; Cell Potentials, Batteries, Fuel Cells * Reading: Kotz: Ch. 20, Sec. 5-6 Moore: Ch. 19, Sec. 5-7, 9-10 * Homework #12 due by 11:55 PM F May 6 * Quiz in second discussion section this week * Lab this week is #8, Redox Titrations
ChemPaths 104 F Apr 29   
()
Today in Chem 104: * Problem-Solving Session * Homework #11 due by 11:55 PM tonight
ChemPaths 104 W Apr 27   
()
Today in Chem 104: * Lecture: Electrochemistry; Redox; Electrochemical Cells * Reading: Kotz: Ch. 20, Sec. 3-4 Moore: Ch. 19, Sec. 3-5 * Homework #11 due by 11:55 PM F Apr 29 * Quiz in second discussion section this week * Lab this week is #9, Copper Ammine Compounds
ChemPaths 104 M Apr 25   
()
Today in Chem 104: * Lecture: Electrochemistry; Redox; Electrochemical Cells * Reading: Kotz: Ch. 20, Sec. 1-2 Moore: Ch. 19, Sec. 1-2 * Homework #11 due by 11:55 PM F Apr 29 * Quiz in second discussion section this week * Lab this week is #9, Copper Ammine Compounds