Problem

Dinitrogen tetroxide decomposes to nitrogen dioxide: N2O4( g) ¡ 2 NO2( g) ΔHrxn ° = 55.3 kJ At 298 K, a reaction vessel initially contains 0.100 atm of N2O4. When equilibrium is reached, 58% of the N2O4 has decomposed to NO2. What percentage of N2O4 decomposes at 388 K? Assume that the initial pressure of N2O4 is the same (0.100 atm).

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