Question

The pH value of $0.1mol/litre$ $HCl$ is approximately $1$. The approximate pH value of $0.05mol/litre$ $H_2{SO}_4$ is most likely to be:

• A. $0.05$
• B. $0.5$
• C. $1$
• D. $2$

Answer 1

Answer: (C)

$1$

$H_{2}S{O}_4$ dissociates to give 2 $H^{+}$ ions so $\left[H^{+}\right]=0.05\times 2=0.1M$ so $pH=1$.