Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are the standard conditions for measuring enthalpy?
π‘ Hint: Think about pressure, temperature, and concentration.
Question 2
Easy
What does ΞHΒ° represent?
π‘ Hint: Look for the symbol representing enthalpy changes.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What pressure corresponds to standard conditions?
- 80 kPa
- 100 kPa
- 120 kPa
π‘ Hint: Remember, 1 atmosphere is approximately 100 kPa.
Question 2
True or False: The standard enthalpy of formation for an element in its standard state is zero.
- True
- False
π‘ Hint: Consider the definition of formation in chemistry.
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Challenge Problems
Push your limits with challenges.
Question 1
Given that the enthalpy change for the complete combustion of ethane (CβHβ) is -1560 kJ/mol, calculate the energy released for the combustion of 3 moles of ethane.
π‘ Hint: Multiply the moles by the enthalpy change for complete combustion.
Question 2
If the enthalpy of formation of water is -285.8 kJ/mol, calculate the total enthalpy change when 4 moles of water are formed under standard conditions.
π‘ Hint: Remember the enthalpy of formation value is negative for water.
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