Which of the following is correct concerning Hess's law?

A-The change of enthalpy of a reaction can be found be subtracting the enthalpy of the products from the enthalpy of the reactants.

B-The change in enthalpy can be found be subtracting the enthalpy of the reactants from the enthalpy of the products.

C-The change in enthalpy can be found by adding the enthalpies of the individual thermochemical reactions of a chemical reaction.

D-The change in enthalpy can be found by subtracting the enthalpies of the individual thermochemical reactions of a chemical reaction.

Question

Popeye

Chemistry

5 January, 13:45

Which of the following is correct concerning Hess's law?

A-The change of enthalpy of a reaction can be found be subtracting the enthalpy of the products from the enthalpy of the reactants.

B-The change in enthalpy can be found be subtracting the enthalpy of the reactants from the enthalpy of the products.

C-The change in enthalpy can be found by adding the enthalpies of the individual thermochemical reactions of a chemical reaction.

D-The change in enthalpy can be found by subtracting the enthalpies of the individual thermochemical reactions of a chemical reaction.

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Answers (2)

Know the Answer?

Addyson Good · Answer 1

I believe the correct answer would be that t he change in enthalpy can be found by adding the enthalpies of the individual thermochemical reactions of a chemical reaction. In Hess' Law, enthalpy is independent of the mechanism of the reaction. The enthalpy should be the sum of all the changes in the reaction.

Spookey · Answer 2

(C) the change in enthalpy can be found in adding the enthalpies of the individual thermochemical reactions of a chemical reaction