Which of the following statements about Hess s ... - SS1 Chemistry Energy Changes in Chemical Reactions Question
Which of the following statements about Hess's law is true?
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.
correct option: b
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