Question

(UP CPMT)
Consider the following salts: NaCl, HgCl, Hg,CI,
CuCl2, CuCl and AgCl. Identify the correct set of
insoluble salts in water.
(a) Hg2Cl2, CuCl, AgCl (b) HgCl2, CuCl, AgCl
(c) Hg2Cl2, CuCl2, AgCl (d) HgCl, CuCl, NaCl
​

Answer 1

Answer :

Hg

2

​

Cl

2

​

,CuCl,AgCl are insoluble in water due to high lattice enthalpy and low hydration enthalpy.

NaCl,HgCl

2

​

,CuCl

2

​

are soluble in water due to low lattice enthalpy and high hydration enthalpy