Equilibrium Question 655
Question: Calculate the partial pressure of carbon monoxide from the following $ CaC{O_{3(s)}}\xrightarrow{\Delta }Ca{O_{(s)}}+CO_2\uparrow $ ; $ K_{p}=8\times {10^{-2}} $
$ C{O_{2(g)}}+{C_{(s)}}\to 2C{O_{(g)}} $ ; $ K_{p}=2 $
$ $ [Orissa JEE 2004]
Options:
A) 0.2
B) 0.4
C) 1.6
D) 4
Show Answer
Answer:
Correct Answer: B
Solution:
Given, $ CaCO_3(s)\xrightarrow{\Delta },CaO(s)+CO_2(g)\uparrow $
$ C(s)+CO_2(g) $ ⇌ $ 2CO(g) $
$ Kp_2=\frac{{{[pCO]}^{2}}}{[pCO_2]} $ ; $ pCO=\sqrt{[Kp_1\times Kp_2]} $
$ pCO=\sqrt{[8\times {10^{-2}}\times 2]}=\sqrt{16\times {10^{-2}}} $
$ =4\times {10^{-1}}=0.4 $
