Question

The $pH$ of $H_{2}S{O}_4=2$. Its molar concentration is-

• A. $0.01$
• B. $0.005$
• C. $0.02$
• D. $0.05$

Answer 1

The correct option is C $0.02$

$pH=2$
$\therefore H^{+}={10}^{-2}$
but $H_{2}S{O}_4=2H^{+}+S{O}_4^{--}$
$\therefore H^{+}=2\times {10}^{-2}=0.02$