The correct order of solubility of the sulphates of alkaline earth metals in water is Be Mg Ca Sr Ba. This is due to

Question

The correct order of solubility of the sulphates of alkaline earth metals in water is Be > Mg > Ca > Sr > Ba. This is due to (A) decreasing lattice energy (B) high heat of solvation for smaller ions like Be2+ (C) increase in melting points (D) increasing molecular weight

Tardigrade Admin · Accepted Answer

As we move down the group from BeSO4 to BaSO4, the enthalpy of hydration of the positive ion becomes smaller due to increase in ionic size. Salts of heavier metal ions are less soluble than those of lighter ions.

Q. The correct order of solubility of the sulphates of alkaline earth metals in water is $B e > M g > C a > S r > B a$ . This is due to

decreasing lattice energy

high heat of solvation for smaller ions like $B e^{2 +}$

increase in melting points

increasing molecular weight

As we move down the group from $B e S O_{4}$ to $B a S O_{4}$ , the enthalpy of hydration of the positive ion becomes smaller due to increase in ionic size. Salts of heavier metal ions are less soluble than those of lighter ions.

Q. The correct order of solubility of the sulphates of alkaline earth metals in water is Be>Mg>Ca>Sr>Ba. This is due to