Balance the following equations:

CHEMISTRY · Multi-part · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

Balance the following equations: (a) BaCrO4+KI+HCl⟶BaCl2+I2+KCl+CrCl3+H2O\mathbf{BaCrO_4 + KI + HCl \longrightarrow BaCl_2 + I_2 + KCl + CrCl_3 + H_2O} (b) SO2+Na2CrO4+H2SO4⟶Na2SO4+Cr2(SO4)3+H2O\mathbf{SO_2 + Na_2CrO_4 + H_2SO_4 \longrightarrow Na_2SO_4 + Cr_2(SO_4)_3 + H_2O} (c) C2H5OH+I2+OH−⟶CHI3+HCO2−+H2O+I−\mathbf{C_2H_5OH + I_2 + OH^- \longrightarrow CHI_3 + HCO_2^- + H_2O + I^-} (Basic)

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