Homework Help: Hess' law

Posted by christine on Friday, February 9, 2007 at 12:34am.

Which of the following is the best definition of Hess' Law?

A. Heat is always released by the decomposition of 1 mole of a compound into its constitute elements.
B. Since enthalpy is a state function, it will be different if a reaction takes place in one step or a series of steps.
C. Heat evolved in a given process can be expressed as the sum of the heats of several processes that, when added, yield the process of interest.
D. The enthalpy of a process is the difference between the enthalpy of the products and the enthalpy of the reactants.
E. At constant pressure the enthalpy change of a reaction is equal to the heat change of a reaction.

D sounds pretty good.

is it C?

C

C, I think.

No one has answered this question yet.

Answer this Question

Related Questions

Chemistry - Which of the following is the best definition of Hess' Law? A. ...
Chemistry - Which of the following is the best definition of Hess' Law? A. ...
Chemistry - Which of the following is the best definition of Hess' Law? A. ...
chem expirement! - You are required to design an experiment to test Hess's ...
chem experiment: - You are required to design an experiment to test Hess's ...
chemistry - At 25 C the following heats of reaction are known: 2CIf (g)+ O2(g...
Chemistry - Use Hess' Law to calculate the heat of the following equation. ...
chemistry - My chem book gives me the following Hess' Law example: Mg + 2HCl...
Chemistry - Explain why the calculated value for the (1) enthalpy of combustion ...
Chem - What is an experimental technique that could be used to determine the ...

For Further Reading

First Name:
School Subject:
Answer: