Question

Which of the following is correct statement with respect to testing of carbonate and bicarbonate ions in the solution?

• A. Most of the bicarbonates forms precipitate on boiling.
• B. Most of the bicarbonates are soluble in water except for sodium bicarbonate..
• C. Most of the carbonates are soluble in sulphuric acid.
• D. none of the above

Answer 1

Answer: (A), (B), (C)

The correct options are
A Most of the bicarbonates forms precipitate on boiling.
B Most of the bicarbonates are soluble in water except for sodium bicarbonate..
C Most of the carbonates are soluble in sulphuric acid.

Carbonates are class of compounds with $C{O}_3^{2-}$ units and bicarbonates are class of compounds with $HC{O}_3^{-}$ units.Most of carbonates are soluble in sulphuric acid.

$C{O}_3^{2-}+H_{2}S{O}_4⟶C{O}_2$

All bicarbonates are soluble in water except sodium bicarbonate.

Bicarbonate do precipitate on boiling.