Answer: Current passes through a solution of sodium

Chapter 25, Problem 8E

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QUESTION:

Problem 8E

Current passes through a solution of sodium chloride. In 1.00 s, 2.68 X 1016 Na+ ions arrive at the negative electrode and 3.92 X 1016 Cl- ions arrive at the positive electrode. (a) What is the current passing between the electrodes? (b) What is the direction of the current?

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QUESTION:

Problem 8E

Current passes through a solution of sodium chloride. In 1.00 s, 2.68 X 1016 Na+ ions arrive at the negative electrode and 3.92 X 1016 Cl- ions arrive at the positive electrode. (a) What is the current passing between the electrodes? (b) What is the direction of the current?

ANSWER:

Solution 8E

Introduction

We have to calculate the current and the direction of the current.

Step 1

Charge of one electron is

The total charge carried by the ion is

Now this amount of charge passed in 1.0 second. Hence the current is

Hence the current is 10.56 mA.

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