Question

Which of the following is a strong electrolyte?

• A. $HCN$
• B. $Ca(N{O}_3{)}_2$
• C. $H_{2}S{O}_3$
• D. $N{H}_{4}OH$

Answer 1

Answer: (C)

$H_{2}S{O}_3$ is a strong electrolyte because it is completely ionised in aqueous solution.