HCl was passed through a solution of . Which of the following compound(s) crystallize (s)?
Both
Only
Only
Solubility of is less than that of the . This is because the hydration enthalpy of is greater than due to the smaller size and higher charge.
The energy released on the dissolution of is higher because the hydration enthalpy compensates for the lattice enthalpy required to break the compound. While in the case of , hydration energy is the least and least soluble.
On passing , is precipitated out first because of the common ion effect.
Hence, the correct answer is option 3.