Write the net ionic equations for the reactions occurring f

Write the net ionic equations for & the reactions occurring for each cation in the group.

a. copper

b. bismush

c. cadmium

d. mercury

e. tin

Solution

a) Molecular equation:
CuO (s) + H2SO4(aq) ? CuSO4(aq) + H2O(l)
Ionic equation:
CuO(s) + 2H+(aq) + SO4 2-(aq) ? Cu2+(aq) + SO4 2- (aq) + H2O(l)
Net ionic equation:
CuO(s) + 2H+ ? Cu 2+(aq) + H2O(l)

b) Full Equation :
3 HNO3 (aq) + Bi(OH)3 (s) ----> Bi(NO3)3 (aq) + 3 H2O (liquid)
Net Ionic Equation :
3 [ H+ ] (aq) + Bi(OH)3 (s) ----> [ Bi+++ ] (aq) + 3 H2O (liquid)

c) CdCl2(aq) + Na2S(aq) --> CdS(s) + 2 NaCl(aq)
net ionic equation should be:
cd(2+) + 2cl(-) + 2na(+) +s(2-) ------> 2na(+) + 2cl(-)

e) molecular,
Sn(s) + 2HCl(aq) ---> SnCl2(aq) + H2(g)
ionic, and
Sn(s) + 2H+(aq) + 2Cl-(aq) ---> Sn2+(aq) + 2Cl-(aq) + H2(g)
net ionic equations
Sn(s) + 2H+(aq) ---> Sn2+(aq) + H2(g)