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At constant pressure, the following reaction 2NO2(g)  N2O4(g) is exothermic. The reaction (as written) isa) always spontaneousb) spontaneous at low temperatures, but not high temperaturesc) spontaneous at high temperatures, but not low temperaturesd) never spontaneouse) cannot tellExplain the choice of your answer

Question

At constant pressure, the following reaction 2NO2(g)  N2O4(g) is exothermic. The reaction (as written) is
a) always spontaneous
b) spontaneous at low temperatures, but not high temperatures
c) spontaneous at high temperatures, but not low temperatures
d) never spontaneous
e) cannot tell
Explain the choice of your answer

check_circleAnswer
Step 1

For the given reaction, change in enthalpy is negative.

Thus, 

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Step 2

For the given reaction, since enthalpy change is zero. Thus, th...

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