Question

For the reaction
$H_2PO_2^- (aq) + OH^- (aq) → HPO_3^{2-} (aq) + H_2(g)$
the rate expression is $k[H_2PO_2 ][OH ]^2$. If the concentration of $H_2PO_2^-$ is

• A. tripled
• B. halved
• C. doubled
• D. unchanged

Answer 1

Answer: (C)

doubled

Answer 2

The correct option is (C): doubled