The combustion of acetylene is used in welder'storches because it produces a very hot flame.
C2H2 (g) + 5/2 O2 (g) -->2CO2 (g) + H2O (g)
200.8 205 2(213.6) 188.7
a) Use data from appedix E to calculate ΔS(knot) for this reaction.
b) Calculate ΔG(knot) and show that the reaction is spontaneous at 25 degrees Celsius.
c) Is there any temperature range in which this reaction is not spontaneous?