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:
- (a) First option is incorrect as the value of $K_P$ given is wrong. It should have been
$K_p=\frac{[P_{CO_2}]}{[P_{CH_4}] \times [P_{O_2}]^{2}}$