AP EAMCET · Chemistry · Chemical Equilibrium
In a \(500 \mathrm{~mL}\) flask, the degree of dissociation of \(\mathrm{PCl}_5\) at equilibrium is \(40 \%\) and the initial amount is 5 moles. The value of equilibrium constant in \(\mathrm{mol} \mathrm{L}^{-1}\) for the decomposition of \(\mathrm{PCl}_5\) is
- A \(2.33\)
- B \(2.66\)
- C \(5.32\)
- D \(4.66\)
Answer & Solution
Correct Answer
(B) \(2.66\)
Step-by-step Solution
Detailed explanation
\begin{aligned} & \mathrm{PCl}_5 \rightleftharpoons \mathrm{PCl}_3+\mathrm{Cl}_2 \text { initial moles } \\ & \left.5(1)^5 \alpha\right) \quad 5 \alpha \quad 5 \alpha \text { moles at equilibrium } \\ & \frac{5(1-\alpha)}{0.5} \quad \frac{5 \alpha}{0.5} \quad \frac{5…
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