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Q.

H2S, a toxic gas with rotten egg like smell, is used for the quantitative analysis. If the solubility of H2S in water at STP is 0.2 m, then Henry’s law constant for H2S in water at 273 K is (use PH2S at STP = 1 bar)

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a

2.78 ×107Pa

b

3.6 ×108Pa

c

5.0 ×105Pa

d

5.0 ×108Pa

answer is D.

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Detailed Solution

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P=KH.X1​ bar=KH×0.20.2+100018, KH=277.78bar=2.78×107Pa

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