For the following reaction: C(s) + 2 H_2(g) rightarrow CH_4(g) delta?_rxn = -76.

Question

For the following reaction: C(s) + 2 H_2(g) rightarrow CH_4(g) delta?_rxn = -76.4 kJ, delta S_rxn=-80.8 J/K which of the following statements is correct? Select one or more: The entropy change of the universe is positive for this reaction. The maximum amount of work that can be done by this reaction is 50.5 kJ. If the reaction loses more than 24.1 kJ of heat to the surroundings, the reaction is considered reversible. If less than 50.5 kJ of work are done by the reaction, the reaction is considered endothermic, otherwise it is considered exothermic.

Explanation / Answer

A. Correct

Entropy change of universe is positive for any irreversible spontaneous reaction.

B. Incorrect

Maximum amount of work=G=H-TS(T=298K)=-52.3 KJ

C. Correct

If reaction loose heat equal to H reaction then it is reversible.

D.. Incorrect

Reaction is exothermic as H is negative

D.

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