Please solve

38. Henry's law constant for dissolution of CH4 in benzene at 298 K is 2  × 105 mm of Hg. Then solubility of CH4 in benzene at 298 K under 760 mm of Hg is :


( 1 )   1 . 2   ×   10 - 5                                                               ( 2 )     3 . 8   ×   10 - 3                 ( 3 )   4   ×   10 - 7                                                                       ( 4 )   1   ×   10 - 2

Dear student,
Here is the solution of your asked query:
Given, p=760mm hgKH=2×105So, according to Henry's law we have;p=KH×xx=pKH = 7602×105 = 380105x=380×10-5=3.8×10-3Therefore, solubility of CH4 in benzene is 3.8×10-3
Hence option (2) is correct.

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