You need to learn how to balance these redox equations yourself. Here is a site that can help. Also, ask specific questions about what you don't understand and I can help you through it.
http://www.chemteam.info/Redox/Redox.html
Balance the following equation:
K2CrO4+Na2SO3+HCl--->KCl + Na2SO4+CrCl3+H2O
Enter the coefficients for each compound, separated by commas, in the order in which they appear in the equation (e.g., 1,2,3,4,5,6,7).
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