Question on: SS1 Chemistry - Energy Changes in Chemical Reactions

Which of the following statements about Hess's law is true?

 

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A

It is only applicable to reactions that occur at constant pressure.

 

B

It can be used to calculate the enthalpy change of a reaction using calorimetry data.

 

C

It can only be applied to reactions that occur in the gas phase.

 

D

It cannot be used to determine the enthalpy change of a reaction if the stoichiometry is unknown.

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Correct Option: B

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