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May 23, 2015

Homework Help: chemistry

Posted by brandy on Monday, November 9, 2009 at 1:11pm.

Consider the reaction shown:
452 kcal + 4 PCl5 (s) P4 (s) + 10 Cl2(g)
This reaction is ________ because the sign of H is ________.
A) exothermic; neither positive nor negative
B) endothermic; positive
C) endothermic; negative
D) exothermic; positive
E) exothermic; negative

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