MgCl2 and CaCl2 exist as MgCl2.6H2O and CaCl2· 6H2O while NaCl and KCl do not form such hydrates. Why?

Asked by Topperlearning User | 12th Aug, 2014, 01:09: PM

Expert Answer:

Because the hydration enthalpies of alkaline earth metal ions, they are larger than those of alkali metal ions. Hence, NaCl and KCl do not form such hydrates as MgCl2 and CaCl2.

Answered by  | 12th Aug, 2014, 03:09: PM