Question

Column I		Column II
A	$Li _3 Na _3\left( AlF _6\right)_2$	p	$108 x^5$
B	Zirconium phosphate	q	$2916 x^8$
C	Bismuth (III) sulphide	r	$27 x^4$
D	Aluminium hydroxide	s	$4 x^3$
E	Calcium fluoride	v	$6912 x^7$

• A. A - (q), B - (t), C - (p), D - (r), E - (s)
• B. A - (t), B - (s), C - (q), D - (p), E - (s)
• C. A - (p), B - (q), C - (r), D - (s) , E - (s)
• D. A - (r), B - (p), C - (s), D - (t) , E - (s)

Answer 1

Answer: (A)

$ Li _3 Na _3\left( AlF _6\right)_2 \rightleftharpoons \underset{3x}{3 Li} ^{\oplus}+\underset{3x}{3 Na} ^{\oplus}+\underset{3x}{2\left( AlF _6\right)^{-3}}$
$( a \rightarrow q )$
$K_{s p}=3^3 3^3 2^2 x^8=2916 x^8$
$( b \rightarrow t ) Zr _3\left( PO _4\right)_4 \rightleftharpoons \underset{3x}{3 Zr ^{+4}}+\underset{4x}{4 PO _4^{3-}}$
$3 x 4 x$
$K_{ sp }=3^3 4^4 x^7=6912 x^7$
$( c \rightarrow p ) Bi _2 S _3 \rightleftharpoons \underset{2x}{2 Bi} ^{3+}+\underset{3x}{3 S ^{2-}}$
$K_{s p}=2^2 3^3 x^5=108 x^5$
$ Al ^5( OH )_3 \rightleftharpoons \underset{x}{Al ^{3+}}+\underset{3x}{3 \overset{\ominus}{O}H}$
$( d \rightarrow r ) x$
$K_{ sp }=1^1 3^3 x^4=27 x^4$
$( e \rightarrow s ) CaF _2 \rightleftharpoons \underset{x}{Ca ^{3+}}+\underset{3x}{2 F ^{-}}$
$K_{ sp }=1^2 2^3 x^3=4 x^3$