Chemistry, 05.04.2021 15:20 ironclone13

Can someone help me with this, please? Given the following reaction equation for the synthesis of Phosphorus Trichloride. Is the reaction endothermic or exothermic?
P4(s) + 6 Cl2(g) → 4 PCl3(g) + 1152 kJ

Exothermic because heat energy is a product.

Endothermic because heat energy is a product.

Endothermic because heat energy is a reactant.

Exothermic because heat energy is a reactant.

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