Question

Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	$K_2{SO}_4.{Al}_2{(SO}_4{)}_3.24H_2{O}_{\left(aq\right)}$	(i)	Bronsted base
(B)	Salt of weak acid and strong base	(ii)	Neutral
(C)	$H_2{PO}_4^{-}$	(iii)	Basic
(D)	Solution of pH 6.5 at high temperature	(iv)	Acidic

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

Answer 1

The correct option is A (A) $\to$ (iv), (B) $\to$ (iii), (C) $\to$ (i), (D) $\to$ (ii)

(A) $K_{2}S{O}_4.Al2\left(S{O}_4\right)3.24H_{2}O⟶$ (iv) Acidic due to hydrolysis

(B) Salt of weak acid & strong base$longrightarrow$ (iii) basic as the base being stronger

(C) ${H_{2}PO4}^{-}⟶$ (i) Bronsted base as it has the capacity to accept a proton

(D) $So{l}^n$ of $pH6.5$ at high temperature$⟶$ (ii) Neutral because water with $pH=6.5$ at high temperature is also neutral