In a flask colourless N_2O_4 is in equilibrium with brown colourless N – InterviewSolution

1.	In a flask colourless N_2O_4 is in equilibrium with brown colourless NO_2. At equilibrium when the flask is heated at 100^Oc the brown colour deepens and on cooling it becomes less coloured. The change in enthalpy DaltaH, for the system is:
Answer» Negative Positive Zero Undefined Answer :B

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