Question

Which of the following is/are correct statement(s) regarding carbonates of alkaline earth metal?
I. They are thermally unstable.
II. They are insoluble in water.
III. They cannot be precipitated by adding sodium or ammonium carbonate.
IV. Beryllium carbonate is thermally unstable.

• A. $I, II$ and $III$ are correct
• B. $II$ and $IV$ are correct
• C. $I, II$ and $IV$ are correct
• D. All are correct

Answer 1

Answer: (C)

Statements $I, II$ and $IV$ are correct, while the statement $III$ is incorrect. It's correct form is as follows
Carbonates of alkaline earth metals can be precipitated by adding sodium or ammonium carbonate due to common ion effect.