Practice Standard Enthalpy of Combustion (ΔH_c°) - 1.2.2.2 | Unit 5: Energetics and Thermochemistry | IB Grade 11: Chemistry
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Standard Enthalpy of Combustion (ΔH_c°)

1.2.2.2 - Standard Enthalpy of Combustion (ΔH_c°)

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the standard enthalpy of combustion for methane?

💡 Hint: Think about the common reaction that produces carbon dioxide and water.

Question 2 Easy

What are the common products of combustion reactions?

💡 Hint: Consider what is produced by burning hydrocarbons.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is ΔH_c°?

Heat released during combustion
Heat absorbed during combustion
Total energy change in reaction

💡 Hint: Remember it is about burning a substance and what happens to energy.

Question 2

True or False: ΔH_c° is always positive for combustion reactions.

True
False

💡 Hint: Think about what occurs when something burns.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Explain the environmental impacts of different combustion fuels and their ΔH_c° values on greenhouse gas emissions.

💡 Hint: Consider the correlations between energy yields and emissions.

Challenge 2 Hard

Using standard enthalpy values, calculate the ΔH_c° for the combustion of propane (C₃H₈) if the reaction is: C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O.

💡 Hint: Find the values for each involved and apply the formula.

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