Question

During electrolysis of molten sodium chloride the time required to produce 0.10mol of chlorine gas using a current of 3 ampere is

Answer 1

Answer: The time required for production of 0.1 mol of chlorine is 6433.3 seconds.

Explanation:

$NaCl\rightarrow Na^++Cl^-$

$2Cl^{-}+\rightarrow Cl_2+2e^{-1}$

1 mole of electron carries charge = 96500 C

1 mole of chlorine is deposited by = $96500\times 2=193000Coloumb$

Thus 0.1 mole chlorine is deposited by = $\frac{193000}{1}\times 0.1=19300Coloumb$

$Q=I\times t$

where Q= quantity of electricity in coloumbs  = 19300 C

I = current in amperes = 3A

t= time in seconds = ?

$19300C=3A\times t$

$t=6433.3sec$