Balance the following chemical equations.(a) HNO3 + Ca(OH)2 → Ca(NO3)2 + H2O(b) NaOH + H2SO4 → Na2SO4 + H2O(c) NaCl + AgNO3 → AgCl + NaNO3(d) BaCl2 + H2SO4 → BaSO4 + HCl

Answer:

According to the law of conservation of mass, atoms are neither created nor destroyed but are reorganised into different arrangements.

The  equation that has an equal number of atoms, in each element on the reactant and product sides is called a balanced chemical equation.

(a) HNO3 + Ca (OH)2 → Ca (NO3)2 + H2O

    Answer- 2HNO3 + Ca (OH)2 → Ca (NO3)2 + 2H2O

(b) NaOH + H2SO4 → Na2SO4 + H2O

      Answer- 2NaOH + (H2SO4) → Na2SO4 + 2H2O

(c) NaCl + AgNO3 → AgCl + NaNO3

      Answer- NaCl + AgNO3 → AgCl + NaNO3

(d) BaCl2 + H2SO4 → BaSO4 + HCl

      Answer- BaCl2 + H2SO4 → BaSO4 + 2HCl