Verified Solution • 2025–26 Session moderate

QNEET-2023-Ch-296: NEET 2023 Chemistry - Class 12 NEET-2023-Ch-296 Solution: Which of the following forms a set of complex and a double salt …

Which of the following forms a set of complex and a double salt respectively?

CuSO_4 \cdot 5H_2O

and

CuCl_2 \cdot 4NH_3

PtCl_2 \cdot 2NH_3

and

PtCl_4 \cdot 2HCl

K_2PtCl_2 \cdot 2NH_3

and

KAl(SO_4)_2 \cdot 12H_2O

NiCl_2 \cdot 6H_2O

and

NiCl_2(H_2O)_4

A $\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}$ CuSO 4 _ _ 5 H 2 _ O and $\mathrm{CuCl}_2, 4 \mathrm{NH}_3$ CuCl 2 _ , 4 NH 3 _
B $\mathrm{PtCl}_2 \cdot 2 \mathrm{NH}_3$ PtCl 2 _ _ 2 NH 3 _ and $\mathrm{PtCl}_4 \cdot 2 \mathrm{HCl}$ PtCl 4 _ _ 2 HCl
C $\mathrm{K}_2 \mathrm{PtCl}_2 \cdot 2 \mathrm{NH}_3$ K 2 _ PtCl 2 _ _ 2 NH 3 _ and $\mathrm{KAl}\left(\mathrm{SO}_4\right)_2 \cdot 12 \mathrm{H}_2 \mathrm{O}$ KAl ( SO 4 _ ) 2 _ _ 12 H 2 _ O
D $\mathrm{NiCl}_2 \cdot 6 \mathrm{H}_2 \mathrm{O}$ NiCl 2 _ _ 6 H 2 _ O and $\mathrm{NiCl}_2\left(\mathrm{H}_2 \mathrm{O}\right)_4$ NiCl 2 _ ( H 2 _ O ) 4 _

Step-by-Step Verified Solution

Complex salt is K 2 [ Pt ( NH 3 ) 2 Cl 2 ] Double salt is KAl ( SO 4 ) 2 _ 12 H 2 O (potash alum)