Answer: B. 0.000005
Explanation:
Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.
The given balanced equilibrium reaction is,
[tex]NOBr(g)\rightleftharpoons 2NO(g)+Br_2(g)[/tex]
At eqm. conc. 0.10 M 0.010 M 0.0050 M
The expression for equilibrium constant for this reaction will be,
[tex]K_c=\frac{[NO]^2[Br_2]}{[NOBr]}[/tex]
Now put all the given values in this expression, we get :
[tex]K_c=\frac{(0.010)^2\times (0.0050)}{(0.10)}[/tex]
[tex]K_c=5\times 10^{-6}=0.000005[/tex]
Thus the value of the equilibrium constant is 0.000005 M .
