### All AP Chemistry Resources

## Example Questions

### Example Question #1 : Electrolysis And Faraday's Law

How many grams of Cr can be obtained by the electrolysis of a Cr(NO_{3})_{3} if 10 amps are passed through the cell for 6 hours?

**Possible Answers:**

19.4 g

38.8 g

12.5 g

103 g

56.3 g

**Correct answer:**

38.8 g

### Example Question #2 : Electrolysis And Faraday's Law

How much Al would be precipitated if an AlCl_{3} solution was electrolyzed for 1.00 hours with 5.00 amps?

**Possible Answers:**

0.84 g

3.36 g

6.72 g

1.25 g

1.68 g

**Correct answer:**

1.68 g

### Example Question #3 : Electrolysis And Faraday's Law

What current must be past through a solution of AlCl_{3} for 1.19 hours to produce 40g of solid Al?

**Possible Answers:**

50.0 amps

10.5 amps

125 amps

100. amps

75.3 amps

**Correct answer:**

100. amps

### Example Question #4 : Electrolysis And Faraday's Law

In the electrolysis of CaCl_{2} a 1.15 amp current is passed through the cell for 5.0 hours. How much Ca is produced?

**Possible Answers:**

18.3 g

2.2 g

1.1 g

8.6 g

4.3 g

**Correct answer:**

4.3 g

### Example Question #5 : Electrolysis And Faraday's Law

How long would it take to electroplate 28.3g of silver at a constant current of 2.0 amps from a solution of silver nitrate?

**Possible Answers:**

422 min

53 min

105 min

844 min

211 min

**Correct answer:**

211 min

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