Write the balanced chemical equations for the following reactions.
a. Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogen carbonate.
b. Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.
c. Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cu2I2), liberates iodine gas and also forms potassium sulphate.
a.Na2CO3 + HCl → NaCl + NaHCO3
When sodium carbonate reacts with HCl in equal molar concentration, sodium chloride and sodium hydrogen carbonate are produced.
b.NaHCO3 + HCl → NaCl + H2O + CO2
When sodium hydrogen carbonate reacts with HCl, it gives sodium chloride, water, and carbon dioxide gas.
c.2CuSO4 + 4KI → Cu2I2 + I2 + 2K2SO4
When copper sulphate reacts with potassium iodide, iodine gas is liberated along with the formation of potassium sulphate and cuprous iodide precipitate.