According to Henry's law, which expression correctly relates the partial pressure $P$ of a gas above a solution to its mole fraction $x$ in the solution?
A$P = x/K_H$
B$P = K_H + x$
C$P = K_H x$
D$K_H = Px$
Answer & Solution
Correct answer: C. $P = K_H x$
Henry's law in this form is $P = K_H x$. Hence the pressure of the gas above the solution is directly proportional to its mole fraction in the liquid.
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