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Question 13

The partial pressure of ethane over a solution containing 6.56 x 10-3 g of ethane is 1 bar. If the solution contains 5.00 x 10-2 g of ethane, then what shall be the partial pressure of the gas?


According to Henry’s law

.m = k x p

Substituting the given values in the above equation.

We get

6.56 x10-3 = k x 1


k = 6.56 x10-3

Now when m = 5 x 10-2,

Then again substituting the given values in Henry’s law equation,we get

 5 x 10-2 = 6.56 x10-3 x p


p = 7.62 bar

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