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

Explanation:

Given that,

Number of sodium ions at the negative electrode,

Number of chloride ions at the positive electrode,

(a) The current flowing in the circuit is due to the positive as well as negative charges such that total charge becomes:

Q = 0.01056 C

The current is given by :

So, the current passing between the electrodes is 10.56 mA.

(b) The direction of electric current is towards negative electrodes.

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