Equilibrium Ques 7

7. For the reaction

[2006]

$CH_4(g)+2 O_2(g) \rightleftharpoons CO_2(g)+2 H_2 O(l), $

$\Delta_rH =-170.8 $ $k J $ $mol^{-1}$

Which of the following statements is not true ?

(a) The equilibrium constant for the reaction is given by $K_p=\frac{[CO_2]}{[CH_4][O_2]^{2}}$

(b) Addition of $CH_4(g)$ or $O_2(g)$ at equilibrium will cause a shift to the right

(c) The reaction is exothermic

(d) At equilibrium, the concentrations of $CO_2(g)$ and $H_2 O(l)$ are not equal

Show Answer

Answer:

Correct Answer: 7.(a)

Solution:

  1. (a) First option is incorrect as the value of $K_P$ given is wrong. It should have been

$K_p=\frac{[P_{CO_2}]}{[P_{CH_4}] \times [P_{O_2}]^{2}}$



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