Practice ∆h Measurements (5.3.b) - Thermodynamics

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6 sample questions

Question 1.
What is calorimetry?
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Think about how we measure temperature changes in a reaction.
Question 2.
Define a bomb calorimeter.
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Consider where combustion reactions are typically studied.
3Question 3.
What does a bomb calorimeter measure?
- Volume of gas
- Heat released in combustion
- Pressure changes
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Think of it as measuring energy from fuel.
4Question 4.
True or False: An endothermic reaction releases heat.
- True
- False
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Remember how temperature changes in endothermic reactions.
Question 5.
A reaction absorbs 400 J of heat, and during this process, it does 100 J of work on the surroundings. Calculate the change in internal energy of the system.
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Apply the formula ∆U = q + w correctly.
Question 6.
In a calorimetry experiment, a student measures a temperature increase of 2 °C in the water surrounding a bomb calorimeter containing 1.0 g of a substance that released 2000 J of heat. Calculate the heat capacity of the calorimeter.
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Use the relationship of heat release and temperature change.

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