Virtual Labs

Chemical Sciences Physical Chemistry Virtual Lab Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

EMF measurement

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In an electrochemical cell _____ occurs at anode and _____ occurs at cathode

a: reduction, oxidation Explanation

Explanation

b: two of these are possible, depending on whether the cell is electrolytic or voltaic. Explanation

Explanation

c: oxidation, oxidation Explanation

Explanation

d: reduction, reduction Explanation

Explanation

e: oxidation, reduction Explanation

Explanation

The standard hydrogen electrode is assigned a potential of _____ volts

a: 0 Explanation

Explanation

b: +2 Explanation

Explanation

c: +1 Explanation

Explanation

d: -2 Explanation

Explanation

e: -1 Explanation

Explanation

Which quantities are conserved in all oxidation-reduction reactions?

a: both charge and mass Explanation

Explanation

b: neither charge and mass Explanation

Explanation

c: charge only Explanation

Explanation

d: mass only Explanation

Explanation

Which statement describes how a salt bridge maintains electrical neutrality in the half cells of an electrochemical cell?

a: it permits the migration of ions Explanation

Explanation

b: it permits the two solutions to mix completely Explanation

Explanation

c: it prevents the reaction from occurring spontaneously Explanation

Explanation

d: it prevents the migration of electrons Explanation

Explanation

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