Open Question: What is true for the following reaction?
Ca(s) + 2C(s) ---> CaC2(s) + 62.8 kJ
A) It is an endothermic reaction and ?H= +62.8 kJ.
B) It is an endothermic reaction and ?H= -62.8 kJ.
C) It is an exothermic reaction and ?H= +62.8 kJ.
D) It is an exothermic reaction and ?H= -62.8 kJ.
E) This reaction will not occur.
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