Hydrogen And Its Compounds Question 252

Question: The hydride ion $ {H^{-}} $ is stronger base than its hydroxide ion $ O{H^{-}} $ . Which of the following reactions will occur if sodium hydride $ ( NaH ) $ is dissolved in water-

Options:

A) $ {H^{-}}(aq)+H_2O\to H_3{O^{-}} $

B) $ {H^{-}}( aq )+H_2O( l )\to O{H^{-}}+H_2 $

C) $ {H^{-}}~+H_2O\to $ No reaction

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ {H^{-}}( aq )+H_2O( l )\to O{H^{-}}+H_2. $ Since H- is a strong base it will abstract $ {H^{+}} $ to form $ H_2O_2 $