3.1.4 Energetics Flashcards by Amber Cassell

Q

What is an enthalpy change?

A

Heat energy transferred in a reaction at constant pressure.

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Q

What are enthalpy changes measured under?

A

Constant pressure

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Q

What type of reaction has a negative enthalpy change?

A

Exothermic

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Q

What type of reaction has a positive enthalpy change?

A

Endothermic

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Q

What type of reaction is combustion?

A

Exothermic

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Q

What does Hess’s law state?

A

The total enthalpy change of a reaction is independent of the route taken.

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Q

What is the definition for enthalpy change?

A

Enthalpy change is the heat energy transferred in a reaction at constant pressure.

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Q

A

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