Question

Chemistry help please?
At which temperature range would the following reaction be spontaneous?
2NH4NO3(s) 2N2(g) + 4H2O(g) + O2(g)

?H = -236 kJ/mol
?S = 46 J/mol K

A. The reaction is never spontaneous.
B. at temperatures below 5130 K
C. at temperatures above 5130 K
D. The reaction is spontaneous at all temperatures.

Answer 1

if \(\Delta\)G is negative, then it is spontaneous.
So, what you want to do here is find \(\Delta\)S, using: \(\sf \color{red}{\Delta G = \Delta H - T\Delta S}\)
Use it to find the temperature the reaction will make \(\Delta\)G < 0