Question

The ratio of partial pressure of gaseous component to the total vapour pressure of the mixture is equal

• A. mass of the components
• B. mole fraction of the component
• C. mass % of the component
• D. molecular mass of the component

Answer 1

The correct option is B mole fraction of the component

According to daltons law of partial pressure for a gaseous mixture of gas $A$ & $B$
$P_A=P_{Total}{x}_A$
$P_{Total}=$ Total pressure of gaseous mixture
$P_A=$ Partial pressure of gas $A$
$x_A=$ mole fraction of gas $A$
$x_A=\frac{P_A}{P_{Total}}$