Question

On passing one faraday of electricity through a dilute solution of an acid, the volume of hydrogen obtained at NTP is__________.

• A. $22400mL$
• B. $1120mL$
• C. $2240mL$
• D. $11200mL$

Answer 1

The correct option is D $11200mL$

$2H^{+}+2e^{-}⟶H_2$

$2$ mol of $e^{-}⟶1$ mol of $H_2$

$1$ mole of $e^{-}⟶\frac{1}{2}$ mol of $H_2$

$1F⟶\frac{1}{2}$ mol of $H_2$

At NTP, $1$ mol $H_2⟶22.4$ litre

$\frac{1}{2}$ mol $⟶11.2$ litre= $11200ml$