The combustion of acetylene was used in welder’s torches for many years because it produces a very hot flame:

(a) Use data in Appendix E to calculate ΔS° for this reaction.

(b) Calculate ΔG° and show that the reaction is spontaneous at 25°C.

(c) Is there any temperature range in which this reaction is not spontaneous?

(d) Do you think you could use Equation 10.4 to calculate such a temperature range reliably? Explain your answer.

Equation 10.4

Appendix E

Transcribed Image Text:

C₂H₂(g) + O₂(g) → 2 CO₂(g) + H₂O(g) AH-1255.5 kJ