STANDARDChemistry-Solutions
STANDARD Chemistry Henry's Law MCQ Question
Type: MCQ-numerical-Medium-Class 12
Henry's law constant for molality of methane in benzene at 298 K is 4.27 × 10⁵ mm Hg. The mole fraction of methane in benzene at 298 K under 760 mm Hg is
A
1.78 × 10⁻³
B
17.43
C
0.114
D
2.814
Correct Answer
Option A
Detailed Explanation
According to Henry's law, p = Kₕx. Solving for x gives x = p/Kₕ = 760/4.27 × 10³ = 1.78 × 10⁻³.
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