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Question

The value of Henry's law constant for some gases at 293K is given below. Arrange the gases in the increasing order of their solubility. He=144.97kbar; H2=69.16kbar
N2=76.48kbar; O2=34.86kbar:

A
He<N2<H2<O2
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B
O2<H2<N2<He
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C
H2<N2<O2<He
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D
He<O2<N2<H2
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Solution

The correct option is A He<N2<H2<O2
KH=px

At constant pressure, KH is inversely proportional to x. Therefore, the higher the KH lower the solubility.
The increasing solubility order is:
He<N2<H2<O2


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