A) zero
B) positive
C) negative
D) none of these
Correct Answer: C
Solution :
Enthalpy of reaction \[(\Delta H)\] is defined as heat exchanged during any chemical reaction \[\Delta H={{H}_{P}}-{{H}_{R}}\] For exothermic reactions \[{{H}_{P}}<{{H}_{R}}\] \[\therefore \] \[\Delta H\] is \[-ve\].
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