HNO3+Mg(OH)2=
HNO3+Cr2O3=
HNO3+Fe(OH)3=
HNO3+MnO=
1. = Mg(No3)2 + H2O 2. = Cr(NO3)3 + H2O 3. = Fe(NO3)3 + H2O 4. = Mn(NO3)2 + H2O