Question

Q. Answer the following questions with respect to potassium chromate (K2CrO4)added to the solution of brarium sulphate (BaSO4) ?

a) write the name of the precipitate?

b) write down the balanced equation for this reaction?

c) will you call this reaction a displacement reaction or a double displacement reaction ?​

Answer 1

Answer: The name of the precipitate is barium chromate. The type of chemical reaction is double displacement.

Explanation: -

K_2CrO_4(aq)+BaSO_4(aq)\------>K_2SO_4(aq)+BaCrO_4(s)K 2CrO 4 (aq)+BaSO 4 (aq)→K 2 SO 4 (aq)+BaCrO4 (s)

Double displacement reaction is one in which exchange of ions take place.

In the given reaction barium chromate (BaCrO_4(s)(BaCrO4(s)) does not dissolve and hence remain as solid or a precipitate and potassium sulphate K_2SO_4K2 SO4

dissolves.