1.

The standardheat of formation in kcal/mol of NO_(2(g)) and N_2O_(4(g)) are 8.0 and 2.0 respectively . The heat of dimerisation of NO_2 is

Answer»

A) `-14.0` KCAL
B)`-6.0` kcal
C) `+12.0` kcal
D) `10.0` kcal

ANSWER :A


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