Question

From the balanced molecular equations, write the complete ionic and net ionic equations for the following. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.)

a)CaCO3(s) + H2SO4(aq) → CaSO4(s) + CO2(g) + H2O(l) *Need complete ionic and net ionic equations

b)K2C2O4(aq) + Cd(OH)2(aq) → 2 KOH(aq) + CdC2O4(s) *Need complete ionic and net ionic equations

c)Zn(NO3)2(aq) + H2SO4(aq) → ZnSO4(s) + 2 HNO3(aq) *Need complete ionic and net ionic equations

Answer 1

a) Molecular equation :-

CaCO3(s) + H2SO4 (aq) ------> CaSO4(s) + CO2(g) + H2O(l)

Ionic equation:-

CaCO3(s) + 2H^+(aq) + SO4^2-(aq) -----> CaSO4(s) + CO2(g) + H2O(l)

Net ionic equation :- There is no spectator ions hence net ionic equation will be same as ionic equation

b) Molecular equation :-

K2C2O4(aq) + Cd(OH)2(aq) ----> 2 KOH(aq) + CdC2O4(s)

Ionic equation:-

2 K^+(aq) + C2O4^2-(aq) + Cd^2+(aq) + 2 OH^-(aq) ----> 2K^+(aq) + 2 OH^-(aq) + CdC2O4 (s)

Net ionic equation :- cancel out same ions from ionic equation

C2O4^2-(aq) + Cd^2+(aq) -----> CdC2O4 (s)

c) Molecular equation :-

Zn(NO3)2(aq) + H2SO4(aq) ------> ZnSO4(s) + 2HNO3(aq)

Ionic equation :-

Zn^2+(aq) + 2NO3^-(aq) + 2H^+(aq) + SO4^2-(aq) ----> ZnSO4(s) + 2H^+(aq) + 2NO3^-(aq)

Net ionic equation :- Cancel out same ions from Ionic equation

Zn^2+(aq) + SO4^2-(aq) ----> ZnSO4 (s)