Write a chemical equation (with state symbols) for:
1) The converstion of anhydrous copper sulphate to hydrated copper sulphate.
2) The precipitation reaction between silver nitrate solution and sodium chloride solution.
3) Sodium chloride dissolving in water
Ans: NaCl(g)=Na+(aq) + Cl-(aq)
4) The precipitation reaction between calcium chloride and sodium carbonate solutions.