Answer to Question #178047 in General Chemistry for Meva

General Chemistry

Question #178047

Give the ΔH value for the decomposition of phosphorus pentachloride as shown in the reaction PCl5(g)+67 kJ→PCl3(g)+Cl2(g)

Expert's answer

Since heat is added to the reactant it's an endothermic reaction, so the sign on ΔH is positive so:

ΔH = +67 kJ

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