Consider the dehydrogenation of ethylene to produce acetylene

1. Estimate the equilibrium constant at 500 and 1000 K, assuming DH independent of temperature, using the following information

	C2H4 (g)	C2H2 (g)	H2(g)
[J/mol]	52 510	227 480	0
[J/mol]	68 460	209 970	0

2. Estimate the equilibrium constant, at 500 and at 1000 K considering the full effect of temperature, using the graph ln K vs 1/T (see next page), compare with the results of the previous point and analyze.

3. If the purpose of the reaction is to obtain as much acetylene as possible, the process should be carried out:

a) high temperature and moderate pressure

b) high temperature and high pressure

c) moderate temperature and moderate pressure

d) moderate temperature and high pressure

explain your answer

Hf,298o Gf,298o