Question

In the reaction, $A + B$⇌, at equilibrium, the concentration of A and B is each and that of C was found to be$0.60 \mathrm {~mol} \mathrm { l } ^ { - 1 }$. The equilibrium constant of the reaction is.

• A. 2.4
• B. 18
• C. 4.8
• D. 9

Answer 1

Answer: (D)

9

Answer 2

$A + B$ ⇌

$K _ { c } = \frac { [ C ] ^ { 2 } } { [ A ] [ B ] } = \frac { [ 0.6 ] ^ { 2 } } { [ 0.2 ] [ 0.2 ] } = 9$