When a sample of NO_(2) is placed in a container, the equilibrium is rapidly established. If the equilibriummixture is of a darker colour at high temperalures and at low pressures, which of the following statements about the reaction is true ?2NO_(2) (g ) - Q hArr N_(2) O_(4) (g)

When a sample of NO_(2) is placed in a container, the equilibrium is r

1.	When a sample of NO_(2) is placed in a container, the equilibrium is rapidly established. If the equilibriummixture is of a darker colour at high temperalures and at low pressures, which of the following statements about the reaction is true ?2NO_(2) (g ) - Q hArr N_(2) O_(4) (g)
Answer» Formation of `N_2O_4` from `NO_2` is exothermic and `N_2O_4` is darker in COLOUR than `NO_2` Formation of `N_2O_4` from `NO_2` is exothermic and `NO_2` is darker in colour than `N_2O_4` Rateoftransformationof`NO_2`to`N_2O_4`isequaltotherateoftransformationof`N_2O_4`to`NO_9`,at equilibrium There is no CHANGE in the concentrations, colour, vapour density of reaction mixture, at equilibrium Solution :Low PRESSURE favours backward reaction `IMPLIES NO_(2)` is derker colour high temperature favours backward reaction exothermic reaction