Methane can be produced from CO and H 2 . The process might be done in two

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Methane can be produced from CO and H2. The process might be done in two steps, as shown below, with each step carried out in a separate reaction vessel within the production plant.

Reaction 1 Substance CO(g) + 2 H(g)  CHOH() Reaction 2 CHOH()  CH4(g) + O(g) CO(g) CHOH() CH4(g) AH (kJ mol-)


You should be able to work this problem without using any additional tabulated data.

(a) Calculate ΔH° for reaction 1.

(b) Calculate ΔGf° for CO(g).

(c) Calculate S° for O2(g).

(d) At what temperatures is reaction 1 spontaneous?

(e) Suggest a reason why these two steps would need to be carried out separately.

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Chemistry For Engineering Students

ISBN: 9780357026991

4th Edition

Authors: Lawrence S. Brown, Tom Holme

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