PYQ NEET- کیمیائی توازن-1 L-1

سوال: مندرجہ ذیل رد عمل کے لیے $\mathrm{K}_{\mathrm{p}}$، $1000 \mathrm{~K}$ پر 3.0 ہے۔

$$ \mathrm{CO}_2(\mathrm{~g})+\mathrm{C}(\mathrm{s}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}) $$

اسی درجہ حرارت پر رد عمل کے لیے $\mathrm{K}_{\mathrm{c}}$ کی قیمت کیا ہوگی؟

(دی گئی: $\mathrm{R}=0.083 \mathrm{~L}$ بار K $^{-1} \mathrm{~mol}^{-1}$ )

A) 3.6

B) 0.36

C) $3.6 \times 10^{-2}$

D) $3.6 \times 10^{-3}$

جواب: $3.6 \times 10^{-2}$

حل:

$\begin{aligned} & \mathrm{CO}2(\mathrm{~g})+\mathrm{C}(\mathrm{s}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}) \ & \Delta \mathrm{n}{\mathrm{g}}=2-1=1 \ & \mathrm{~K}{\mathrm{p}}=\mathrm{K}{\mathrm{c}}(\mathrm{RT})^{\Delta \mathrm{n}{\mathrm{g}}} \ & \mathrm{K}{\mathrm{p}}=\mathrm{K}{\mathrm{c}}(\mathrm{RT}) \ & {\left[\because \mathrm{K}{\mathrm{p}}=3\right]} \ & \mathrm{K}{\mathrm{c}}=\frac{\mathrm{K}{\mathrm{p}}}{\mathrm{RT}}=\frac{3}{0.083 \times 1000} \ & =0.036 \ & =3.6 \times 10^{-2}\end{aligned}$



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