Q. The solubilities of carbonates decrease down the magnesium group due to decrease in
A) Lattice energies of solids
B) Hydration energies of cations
C) Interionic attraction
D) Entropy of solution formation
Explanation
(b)
Solubilities of carbonates decrease down the group because lattice energy decrease is almost constant while decrease in hydration energy downs sharply, finally difference of hydration energy and lattice energy decrease thus solubility decreases.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.