For the first reactionHNO3 + Al -> NH4NO3 + HBalanced equation4HNO3 + Al -> NH4NO3 + 3H2
For the second reactionH2SO4 + K -> SO2 + S + H2Balanced equationH2SO4 + 2K -> SO2 + K2SO4 + H2O
For the first reaction
HNO3 + Al -> NH4NO3 + H
Balanced equation
4HNO3 + Al -> NH4NO3 + 3H2
For the second reaction
H2SO4 + K -> SO2 + S + H2
Balanced equation
H2SO4 + 2K -> SO2 + K2SO4 + H2O