Question

A voltaic cell was operated at a current of 10−16A. (a) At this current, how long would it take to
deliver 0.5 mol e−
? (b) How many electrons would be delivered by the cell to a pulsed measuring
circuit in 10ms?

Answer 1

Answer:

a.1 mol of electrons make 96500C .so 0.5 mol make 48250C of charge .

here I=10^-16A.

Q=It

t=q/i

=48250/10^-16

=4.825*10^20 sec.

b.q=it

=10^-16*10^-3

=10^-19c

10^-19/96500

1.036*10^-24 electrons

Explanation:

1 mol of electrons make 96500 charge.so 0.5mol make 48250c.

number of electrons=total charge/96500