Cr(OH)3+CL2+NaOH=Na2CrO4+NaCl+H2O. Решить ОВР!!
Cr⁺³ - 3e = Cr⁺⁶ 2 Cl⁰₂ + 2e = 2Cl⁻ 3 2Cr(OH)3+3CL2+10NaOH=2Na2CrO4+6NaCl+8H2O