Question

in a flask colorless N2 o4 is in equilibrium with brown coloured and NO2 at equilibrium when the flask is heated at hundred degrees the brown colour depends on cooling it becomes less colour the change in enthalpy detached for the formation of an O2 is,
a.negative
b.positive
c.zero and
d.undefined.​

Answer 1

Answer:

b , hope you like it☝☝☝☝☝☝☝