Dinitrogen tetroxide decomposes to nitrogen dioxide: N2O4(g)→2NO2(g)ΔrHo=55.3kJmol−1

At 298 K, a reaction vessel initially contains 0.100 bar of N2O4. When equilibrium is reached, 58% of the N2O4 has decomposed to NO2.

What percentage of N2O4 decomposes at 383 K ? Assume that the initial pressure of N2O4 is the same (0.100 bar).

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it was spontaneous.

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