2NO_(2(g)) (brown) hArr N_2O_(4(g)) , DeltaH=57.2 kJ mol^(-1) if the reaction vessel kept in ice and hot water than what is the change in colour ?

2NO_(2(g)) (brown) hArr N_2O_(4(g)) , DeltaH=57.2 kJ mol^(-1) if the r

1.	2NO_(2(g)) (brown) hArr N_2O_(4(g)) , DeltaH=57.2 kJ mol^(-1) if the reaction vessel kept in ice and hot water than what is the change in colour ?
Answer» Solution :This REACTION is exothermic. So at lower temperature the forward reaction TAKE PLACE. So in mixture `NO_2` decreases so brown colour. decreases. If the vessel kept in hot water then the reaction take place in REVERSE DIRECTION and concentration of `NO_2` increases so brown colour increases.