Which energy profile best shows that the enthalpy of formation of cs2 is 89.4 kj/mol?

Question

Chemistry

Mathew Padilla

7 February, 17:08

Which energy profile best shows that the enthalpy of formation of cs2 is 89.4 kj/mol?

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Answers (1)

Know the Answer?

Darien Barnett · Answer 1

Answer is: B. C (s) + 2S (s) + 89.4 kJ → CS2 (l).

Missing question:

A. C (s) + 2S (s) → CS2 (l) + 89.4 kJ.

B. C (s) + 2S (s) + 89.4 kJ → CS2 (l).

C. C (s) + 2S (s) + 89.4 kJ → CS2 (l) + 89.4 kJ.

D. C (s) + 2S (s) → CS2 (l).

Because enthalpy of the system is greater that zero, this is endothermic reaction (chemical reaction that absorbs more energy than it releases), heat is included as a reactant.