1)Cr(OH)3+HCl=Cr(OH)2Cl+H2O
Cr(OH)3+2HCl=CrOHCl2+2H2O
Cr(OH)3+3HCl=CrCl3+3H2O
2)H2SO4+NaOH=NaHSO4+H2O
H2SO4+2NaOH=Na2SO4+2H2O
1)Cr(OH)3+HCl=Cr(OH)2Cl+H2O
Cr(OH)3+2HCl=CrOHCl2+2H2O
Cr(OH)3+3HCl=CrCl3+3H2O
2)H2SO4+NaOH=NaHSO4+H2O
H2SO4+2NaOH=Na2SO4+2H2O