Question

Both K+ and SO2−4 are spectator ions in the equilibrium reactionK2CrO4(aq)+H2SO4(aq)⇌, write the net ionic equation for the equilibrium reaction.

Answer 1

we have below given equation

K2CrO4 (aq) + H2SO4 (aq) --> K2SO4 (aq) + H2CrO4 (aq)

H2CrO4 is weak electrolyte, hence it will not dissociate completely into H+ and CrO42-

Total ionic equation is

Spectator ions should not be removed here. Spectator ions are part of total ionic equation

2 K+ (aq) + CrO42- (aq) + 2 H+ (aq) + SO42- (aq) --> 2 K+ (aq) + SO42- (aq) + H2CrO4 (aq)

Spectator ions should be removed now. Spectator ions are not part of total ionic equation

After removing Spectator ions, net ionic equation is:

2 H+ (aq) + CrO42- (aq) —> H2CrO4 (aq)

Answer: 2 H⁺ (aq) + CrO₄^2- (aq) —> H₂CrO₄ (aq)