Question

Match the reactions of column I with their types given in column II and mark the appropriate choice.

	Column I		Column II
A	$H_{2}O+N{H}_3\rightleftharpoons N{H}_4^{+}+OH$	i	Self ionisation of $H_{2}O$
B	$FeC{l}_3+3H_{2}O\to Fe(OH{)}_3+3HCl$	ii	Decomposition
C	$H_{2}O+H_{2}O\rightleftharpoons H_3{O}^{+}+OH$	iii	Acidic nature of $H_{2}O$
D	$2H_{2}O\to 2H_2+O_2$	iv	Hydrolysis

• A. (A)$\to$(ii), (B) $\to$(i), (C)$\to$(iii), (D)$\to$ (iv)
• B. (A)$\to$ (i), (B) $\to$ (ii), (C)$\to$(iv), (D)$\to$ (iii)
• C. (A)$\to$(iii), (B)$\to$(ii), (C)$\to$ (iv), (D)$\to$(i)
• D. (A)$\to$ (iii), (B)$\to$(iv), (C)$\to$ (i), (D)$\to$(ii)

Answer 1

Answer: (D)

(A) $H_{2}O+N{H}_3\rightleftharpoons N{H}_4+O{H}^{-}$

Here $N{H}_3$ is Lewis base and $H_{2}O$

acid as acid to it represents

acidic nature of $H_{2}O$

(b)$F_{e}C{l}_3+H_{2}O\to F_e(OH{)}_3+3HCl$

it is are example of hydrolysis

reaction which produces acid and base

(C) $H_{2}O+H_{2}o\to H_{3}O+O{H}^{-}$

self ionisation of water

(D) $2H_{2}O\to 2H_2+O_2$

Decomposition of water in their

corresponding molecule

(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)