Redox and Equivalent ConceptHard

Question

How many grams of H2S will react with 6.32 g KMnO4 to produce K2SO4 and MnO2? (K = 39, Mn = 55)

Options

A.4.08 g
B.0.85 g
C.0.51 g
D.2.04 g

Solution

$n_{eq}H_{2}S = n_{eq}KMnO_{4}$

Or $\frac{w}{34} \times 8 = \frac{6.32 \times 3}{158} \Rightarrow w = 0.51\text{ g}$

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