Question

Which of the following statements is incorrect?

• A. Water is amphoteric
• B. Water acts as an oxidizing agent
• C. Water acts as a reducing agent
• D. Sodium hydride is insoluble in water

Answer 1

The correct option is D Sodium hydride is insoluble in water

$H_{2}O\rightleftharpoons \underset{{10}^{-7}mol{L}^{-1}}{H^{+}}+\underset{{10}^{-7}mol{L}^{-1}}{O{H}^{-}}\left(H_{2}O\text{is amphoteric}\right)$
$2H_{2}O+2e^{-}\to 2O{H}^{-}+H_2\left(H_{2}O\text{is an oxidizing agent}\right)$
$2H_{2}O\to 4H^{+}+O_2+4e^{-}\left(H_{2}O\text{is reducing agent}\right)$
(d) Sodium hydride reacts violently with water .