Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 12
Consider a hypothetical reaction A(g) → B(g) + C(g). The initial pressure of A is p_i atm. Describe the change in partial pressures of the components at time t, given that the partial pressure of A decreases by x atm. Which of the following correctly represents the expression for the partial pressure of A at time t?
A
p_A = 2p_i - p_t
B
p_A = p_i + x
C
p_A = p_i - 2x
D
p_A = p_i - p_t + x
Correct Answer
Option A
Detailed Explanation
From the NCERT context, the partial pressure of A at time t is given by p_A = p_i - x, which simplifies to p_A = 2p_i - p_t through the relation x = (p_t - p_i).
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