Question

Zinc gives $H_2$ gas with $H_{2}S{O}_4$ and conc. $HCl$ but not with conc. $HN{O}_3$ this is because

• A. conc. $HN{O}_3$ is is a weaker acid than conc. $H_{2}S{O}_4$ and conc. HCl
• B. zinc is more reactive than $H_2$
• C. $N{O}_3^{-}$ ion is reduced in preference to hydronium ion
• D. $HN{O}_3$ acts as a reducing agent

Answer 1

The correct option is C $N{O}_3^{-}$ ion is reduced in preference to hydronium ion