# 2.13    The partial pressure of ethane over a solution containing  of ethane is 1 bar. If the solution contains of ethane, then what shall be the partial pressure of the gas?

Using Henry's Law we can write,

Putting value in this equation, we get :

So, the magnitude of k is   .

Now, we will again use the above equation for  .

So the required partial pressure is :-

or

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