The hydride ion H- is stronger base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water?

Question

The hydride ion H- is stronger base than its hydroxide ion OH-. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water? (A) 2 H -( aq )+ H 2 O (l) longrightarrow H 2 O + H 2+2 e- (B) H -(a q)+ H 2 O (l) arrow OH -+ H 2 (C) H-+H2O(l) arrow No reaction (D) None of the above

Tardigrade Admin · Accepted Answer

Sodium hydride dissolved in water as NaH + H 2 O arrow NaOH + H 2 or H -(a q)+ H 2 O ( l ) arrow OH -+ H 2 uparrow In the above reaction hydride ion take proton from water molecule and hydrogen gas is evolved.

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

$2 H^{-} (a q) + H_{2} O (l) ⟶ H_{2} O + H_{2} + 2 e^{-}$

$H^{-} (a q) + H_{2} O (l) \to O H^{-} + H_{2}$

$H^{-} + H_{2} O (l) \to$ No reaction

None of the above

Sodium hydride dissolved in water as
$N a H + H_{2} O \to N a O H + H_{2}$
or $H^{-} (a q) + H_{2} O (l) \to O H^{-} + H_{2} ↑$
In the above reaction hydride ion take proton from water molecule and hydrogen gas is evolved.

Q. The hydride ion H− is stronger base than its hydroxide ion OH−. Which of the following reactions will occur if sodium hydride (NaH) is dissolved in water?

2H−(aq)+H2​O(l)⟶H2​O+H2​+2e−

H−(aq)+H2​O(l)→OH−+H2​

H−+H2​O(l)→ No reaction