Question

State whether the following statement is True or False.

Acidified K₂Cr₂O₇ test comes positive for carbonate ion.

Answer 1

This statement is false.

Explanation:

The acidified K₂Cr₂O₇ test comes positive for sulphite \[\ce{(SO^{2-}3)}\] or SO₂ gas by turning from orange to green; it remains unaffected by the CO₂ gas evolved from carbonated ions.