1) Амфотерность гидроксида Cr(OH)3:Molecular equation: Cr(OH)3 (s) + 3HCl (aq) -> CrCl3 (aq) + 3H2O (l)Ion-molecular equation: Cr(OH)3 (s) + 3H+ (aq) + 3Cl- (aq) -> Cr3+ (aq) + 3Cl- (aq) + 3H2O (l)
2) Амфотерность гидроксида Pb(OH)2:Molecular equation: Pb(OH)2 (s) + 2HNO3 (aq) -> Pb(NO3)2 (aq) + 2H2O (l)Ion-molecular equation: Pb(OH)2 (s) + 2H+ (aq) + 2NO3- (aq) -> Pb2+ (aq) + 2NO3- (aq) + 2H2O (l)
1) Амфотерность гидроксида Cr(OH)3:
Molecular equation: Cr(OH)3 (s) + 3HCl (aq) -> CrCl3 (aq) + 3H2O (l)
Ion-molecular equation: Cr(OH)3 (s) + 3H+ (aq) + 3Cl- (aq) -> Cr3+ (aq) + 3Cl- (aq) + 3H2O (l)
2) Амфотерность гидроксида Pb(OH)2:
Molecular equation: Pb(OH)2 (s) + 2HNO3 (aq) -> Pb(NO3)2 (aq) + 2H2O (l)
Ion-molecular equation: Pb(OH)2 (s) + 2H+ (aq) + 2NO3- (aq) -> Pb2+ (aq) + 2NO3- (aq) + 2H2O (l)