STANDARDChemistry-Chemical Equilibrium
STANDARD Chemistry Equilibrium Constant MCQ Question
Type: MCQ-numerical-Medium
At 473 K, Kc for the reaction, PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) is 8.3 × 10⁻³. What will be the value of Kc for the formation of PCl₅ at the same temperature.
A
8.3 × 10³
B
120.48
C
8.3 × 10⁻³
D
240.8
Correct Answer
Option B
Detailed Explanation
The equilibrium constant for the reverse reaction is the reciprocal of the forward reaction. Therefore, Kc for the formation of PCl₅ is 1 / 8.3 × 10⁻³ = 120.48.
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