Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a diagram of a solution containing two components with a total pressure P_total over the solution. The partial pressures of components 1 and 2 in the vapour phase are represented as p_1 and p_2, respectively. Which equation correctly expresses the relationship between the total pressure and the mole fractions of the components in the solution?
A
P_total = x_1 * p_1^0 + x_2 * p_2^0
B
P_total = x_1 + x_2
C
P_total = p_1^0 + p_2^0
D
P_total = (x_2 * p_1^0) / (x_1 * p_2^0)
Correct Answer
Option A
Detailed Explanation
The total pressure over a solution is given by the sum of the products of the mole fractions and the vapour pressures of pure components, as shown in the equation P_total = x_1 * p_1^0 + x_2 * p_2^0.
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