Question

Write balanced, net ionic equations for the reactions that occur when the following chemicals are mixed together in aqueous solution.

a.) Cu(NO3)2, H2S

b.) SbCl3, H2S

c.) MnCl2, NaBiO3, H+

d.) Sb3+, Al (s)

e.) Ba(NO3)2, K2CrO4

Answer 1

a) Balanced equation is Cu(NO₃)₂ (aq) + H₂S (aq) = CuS (s) + 2HNO₃ (aq)

Net ionic equation is Cu²⁺ (aq) + S^2- (aq) = CuS (s).

b) Balanced equation is 2SbCl₃ (aq) + 3H₂S (aq) = Sb₂S₃ (s) + 6HCl (aq)

Net ionic equation is 2Sb³⁺ (aq) + 3S^2- (aq) = Sb₂S₃ (s).

c) Balanced equation is

2MnCl₂ (aq) + 5NaBiO₃ (aq)+ 20HNO₃ (aq)= 2HMnO₄ (aq) + 5Bi(NO₃)₃ (aq)+ 5NaNO₃ (aq)+ 4HCl (aq)+ 7H₂O (l)

Net ionic equation is

2Mn²⁺ (aq) + 5BiO₃^- (aq) + 14H⁺ (aq) = 2MnO₄^- (aq) + 5Bi³⁺ (aq) + 7H₂O (l)

d) Balanced equation is

Sb³⁺ (aq) + Al (s) = Al³⁺ (aq) + Sb (s)

Net ionic equation is

Sb³⁺ (aq) + Al (s) = Al³⁺ (aq) + Sb (s)

e) Balanced equation is Ba(NO₃)₂ (aq) + K₂CrO₄ (aq) = BaCrO₄ (s) + 2KNO₃ (aq)
Net ionic equation is Ba²⁺ (aq) + CrO₄^2- (aq) = BaCrO₄ (s)