The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water . Explain .

The hydroxides and carbonates of sodium and potassium are easily solub

1.	The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water . Explain .
Answer» Solution :Due to larger size of Na and K as compared to that of Mg and Ca , the lattice ENTHALPIES of hydroxides and CARBONATES of sodium and potassium are MUCH lower than those of the hydroxides and carbonates of magnesium and calcium . As a RESULT , the hydroxides and carbonates of Na and K are EASILY soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water .