Hess' Law Quiz

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1. Hess' Law states...

  • 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
  • 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 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 Hess' are the same, the total enthalpy change is the same for each route
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Other questions in this quiz

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

  • Indirectly
  • Faster
  • Directly
  • More accurately

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

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

4. Enthalpies of formation of elements in their standard states are equal to zero?

  • True
  • False

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

  • Exothermic
  • Equithermic
  • Endothermic
  • A state function

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