A.) We write the molecular equation for the chemical reaction as:
BaCl2(aq)+Na2SO4(aq)→BaSO4(s)⏐+2NaCl(aq)
Alternatively, we could write the net ionic equation:
Ba2+ + SO2^−4→ BaSO4(s)⏐
B.)We write the molecular equation for the chemical reaction as:
Ba(OH)^2 + 2HBr → BaBr2 + 2H2O
The ionic equation can be written as;
Ba^2+ + 2OH^- + 2H^+ + 2Br^- →
Ba^2+ + 2Br^- + 2H2O
the net ionic equation can be written as;
2OH^- + 2H^+ → 2H2O
Alternatively, we could write the net ionic equation
OH^-(aq) + H^+(aq) → H2O(l) net ionic equation.
C.) We write the molecular equation for the chemical reaction as:
2 HNO2(aq) + Ba(OH)2(aq)
→ Ba(NO2)2(aq) + 2 H2O(l)
Net ionic equation
HNO2(aq) + OH-(aq) → NO2-(aq) + H2O(l)
Alternatively, we could write the net ionic equation as:
2H^+ + 2OH → 2H2O
