Question

balance the equations -
1) CaCo3 + HCl = CaCl2 + H2O
2) Na + H2SO4 = NaSO4 + H2
3) Ca(OH)2 + HCl = CaCl2 + H2O
4) Ag + HNO3 = Ag NO3 + H2

Answer 1

1) In product side carbon is not there. So it can't be balanced.
2) already balanced.
3) Ca(OH)2+2HCl=CaCl2+2H2O
4) 2Ag+2HNO3=2AgNO3+H2