Question

write the balanced chemical reaction for the following: quicklime reacts with water to give slaked lime ,barium chloride reacts with potassium sulphate to form barium sulphate and potassium chloride

Answer 1

1, Cao(s)+H2O=Ca(oH)2+energy 
2, BaCl2 + K2SO4 → BaSO4 + 2KCl