Practice Standard Enthalpy Of Combustion (δh_c°) (1.2.2.2) - Unit 5: Energetics and Thermochemistry

Practice: Standard Enthalpy of Combustion (ΔH_c°)

Lesson 1.2.2.2Unit 5: Energetics and Thermochemistry

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8 questions

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6 sample questions

Question 1.
What is the standard enthalpy of combustion for methane?
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Think about the common reaction that produces carbon dioxide and water.
Question 2.
What are the common products of combustion reactions?
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Consider what is produced by burning hydrocarbons.
3Question 3.
What is ΔH_c°?
- Heat released during combustion
- Heat absorbed during combustion
- Total energy change in reaction
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Remember it is about burning a substance and what happens to energy.
4Question 4.
True or False: ΔH_c° is always positive for combustion reactions.
- True
- False
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Think about what occurs when something burns.
Question 5.
Explain the environmental impacts of different combustion fuels and their ΔH_c° values on greenhouse gas emissions.
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Consider the correlations between energy yields and emissions.
Question 6.
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.
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Find the values for each involved and apply the formula.

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