Balance the following equation: K_2Cr0_4 + Na_2S0_3 + HC1=KCi + Na_2S0_4 + C_rC_

Question

Balance the following equation: K_2Cr0_4 + Na_2S0_3 + HC1=KCi + Na_2S0_4 + C_rC_h + H_20 Generally coefficients of 1 are omitted from balanced chemical equations. When entering your answer, include coefficients of 1 as required for grading purposes. 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). My Answers Give Up Review Part In the process of oxidizing I to I_2, SO4 is reduced to S0_2. How many moles of S0_2 are produced in the formation of one mole of I_2 ? Express your answer numerically in moles.

Explanation / Answer

PART A

2K2CrO4 + 3 Na2SO3 + 10 HCl --> 4 KCl + 3 Na2SO4 + 2 CrCl3 + 5 H2O

2,3,10,4,3,2,5

PART B

2 I- --> I2 + 2e-       ;     SO42- + 4H+ + 2e- --> SO2 + 2 H2O

2 I- + SO42- + 4 H+ --> I2 + SO2 + 2 H2O
1 mole of SO2 is produced

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