Question

Balance the equation:
K2CrO4 + Na2SO3 + HCl --> KCl + Na2SO4 +CrCl3 + H2O
I'll help get you started.
Cr goes from an oxidation state of +6 on the left to +3 on the right. S goes from an oxidation state of +4 on the left to +6 on the right. Everything else is a spectator ion. Follow the usual instructions for balancing redox equations.

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