# Hess' Law Quiz

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## 1. For a given process at constant pressure, enthalpy change is negative. This means that the process is _______.

• Endothermic
• Exothermic
• Equithermic
• A state function
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## 2. Hess' Law states...

• if a reaction can take place by more than one route and the initial and final conditions are the same, the total enthalpy change is the same for each route
• if the reaction can take place by more than one route and the initial and final Hess' are the same, the total enthalpy change is the same for each route
• if the reaction can take place by more than one route and the initial and final temperatures are the same, the total enthalpy change is the same for each route
• if the reaction can take place by more than one route and the initial and final masses are the same, the total enthalpy change is the same for each route

## 3. Which of the following is an example of an exothermic situation?

• An ice cube melting in your hand
• A log burning in the fireplace
• A chemical cold pack placed over an injured knee

• True
• False

## 5. Hess' Law provides a method for finding an enthalpy change...

• More accurately
• Faster
• Indirectly
• Directly