Question

Pb + HCI = PbCl2 + H2 Fe + HCI = FeCl2 + H2 Al + H2SO4 = Al2(SO4)3 + H2

Answer 1

1) Pb+2HCl=PbCl2+H2

2) Fe+2HCl=FeCl2+H2

3) 2Al+3H2SO4=Al2(SO4)3+3H2