Why alkaline earth metals are sparingly soluble in water?

(ii) Solubility in Water This is due to the fact that the lattice energy decreases down the group due to increase in size of the alkaline earth metals cation whereas the hydration energy of the cation remains almost unchanged.

Why are alkaline earth metal carbonates insoluble in water?

The size of anions being much larger compared to cations, the lattice enthalpy will remain almost constant within a particular group. Since the hydration enthalpies decrease down the group solubility will decrease as found for alkaline earth metal carbonates and sulphates.

Are carbonates of alkaline earth metals soluble in water?

Solubility of the carbonates of alkaline earth metals: All the carbonates of alkaline earth metals are insoluble in water. Thermal stability of carbonates of alkaline earth metals: All the carbonates of alkaline earth metals decompose on heating to form oxide and carbon dioxide.

Which carbonate is sparingly soluble in water?

Magnesium carbonate
Magnesium carbonate is sparingly soluble in water.

Which of the following Group 1 carbonates is sparingly soluble?

By contrast, the least soluble Group 1 carbonate is lithium carbonate. A saturated solution has a concentration of about 1.3 g per 100 g of water at 20°C.

Which of the following group 1 carbonates is sparingly soluble?

Why does the solubility of alkaline metal carbonates decrease down the group?

The solubility of the carbonates and the sulfates decreases rapidly down the group because hydration energies decrease with increasing cation size. The solubility of alkaline earth carbonate and sulfates decrease down the group because the hydration energies decrease.

Why is carbonate insoluble in water?

The calcium carbonate is a strong ionic compound. It has a very high electrostatic force of attraction; because of this the atoms are very tightly held together. Bonds being very strong do not break, leading to calcium carbonate being insoluble in water.

Why is alkaline earth metal hydroxide soluble?

a. Among alkaline earth metal hydroxides, the anion being common, the cationic radius will influence the lattice enthalpy. Since lattice enthalpy decreases much more than the hydration enthalpy with increasing ionic size, the solubility increases down the group (↓).

Why does the solubility of alkaline earth metal carbonate and sulphide in water decreases down the group?