The brown gas no2 and the colorless gas n2o4 exist in equilibrium,2no2 n2o4.in an experiment, 0.625 mole of n2o4 was introduced into a 5.00 l vessel and was allowed to decompose until equilibrium was reached. the concentration of n2o4 at equilibrium was 0.0750 m. calculate kc for the reaction.0.0500.07500.100.1257.5

Answer : The value of for the reaction is, 7.5

Explanation :

Initial concentration of =

The balanced decomposition equilibrium reaction is,

Initial conc.     0.125          0

At eqm.          (0.125-x)       2x

The expression of equilibrium constant for the reaction will be:

Now put all the values in this expression, we get :

The concentration of at equilibrium = 0.0750 M

So, 0.125 - x = 0.0750

x = 0.05 M

Now put the value of 'x' in the above expression, we get:

Now we have to calculate the value of for the given reaction.

As we know that,

So,

Therefore, the value of for the reaction is, 7.5

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