Chemical EquilibriumMedium
Question
In a flask, colourless N2O4 is in equilibrium with brown coloured NO2. At equilibrium, when the flask is heated at 100oC the brown colour deepens and on cooling, it becomes less coloured. The change in enthalpy, ΔH, for the system is
Options
A.negative
B.positive
C.zero
D.undefined
Solution
N2O4$\rightleftharpoons$2NO2
On increasing temperature, the reaction will shift forward and hence, ΔH = +ve.
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