Calorimetry

Last updated: 05/02/2020

OCR-A A-Level Chemistry Physical chemistry Calorimetry

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Question 1 of 20

1. Question
What is the definition of calorimetry?
- The quantitive study of energy in a chemical reaction
- The qualititive study of energy in a chemical reaction
- The temperature change of a reaction
- The energy change of a reaction
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Question 2 of 20

2. Question
What is the definition of specific heat capacity?
- Energy required to raise the temperature of 1g of a substance by 1K
- Energy at the beginning of a reaction
- Energy required to raise the temperature of 1kg of a substance by 1K
- Energy at the end of a reaction
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Question 3 of 20

3. Question
What is the calculation for the amount of heat exchange with the surroundings in a reaction?
- q = mcΔT
- mc = ΔT
- ΔT = qmc
- T = qmc
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Question 4 of 20

4. Question
What does the symbol ‘Δ’ mean?
- A change
- Positive number
- Negative number
- Energy
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Question 5 of 20

5. Question
What does the symbol ‘q’ stand for in the equation for the amount of heat exchange with the surroundings in a reaction?
- Heat exchanged with the surroundings
- Mass
- Change in temperature
- Specific heat capacity
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Question 6 of 20

6. Question
What does the symbol ‘m’ stand for in the equation for the amount of heat exchange with the surroundings in a reaction?
- Mass
- Heat exchanged with the surroundings
- Change in temperature
- Specific heat capacity
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Question 7 of 20

7. Question
What does the symbol ‘c’ stand for in the equation for the amount of heat exchange with the surroundings in a reaction?
- Specific heat capacity
- Heat exchanged with the surroundings
- Change in temperature
- Mass
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Question 8 of 20

8. Question
What does the symbol ‘ΔT’ stand for in the equation for the amount of heat exchange with the surroundings in a reaction?
- Mass
- Heat exchanged with the surroundings
- Change in temperature
- Specific heat capacity
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Question 9 of 20

9. Question
What is a bomb calorimeter?
- A piece of equipment that minimises heat loss as much as possible
- A piece of equipment that stops all heat loss
- A piece of equipment that allows evaporation
- A piece of equipment that maximises heat loss as much as possible
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Question 10 of 20

10. Question
What element does a bomb calorimeter use?
- Oxygen
- Tin
- Carbon
- Hydrogen
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Question 11 of 20

11. Question
0.3 grams of methane is used to heat 345 cm $^3$ of water from 5°C to 25°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -1538.24 kJ mol $^{-1}$
- 9246.55 kJ mol $^{-1}$
- -683.35 kJ mol $^{-1}$
- 789.34 kJ mol $^{-1}$
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Question 12 of 20

12. Question
0.2 grams of ethane is used to heat 100 cm $^3$ of water from 10.35°C to 19.6°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -579.98 kJ mol $^{-1}$
- -385.45 kJ mol $^{-1}$
- 234.12 kJ mol $^{-1}$
- -923.88 kJ mol $^{-1}$
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Question 13 of 20

13. Question
0.5 grams of methane is used to heat 150 cm $^3$ of water from 12°C to 35.5°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -471.50 kJ mol $^{-1}$
- -712.27 kJ mol $^{-1}$
- 471.50 kJ mol $^{-1}$
- 712.27 kJ mol $^{-1}$
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Question 14 of 20

14. Question
1.5 grams of propane is used to heat 200 cm $^3$ of water from 12.5°C to 30.5°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -441.41 kJ mol $^{-1}$
- -453.78 kJ mol $^{-1}$
- 667.5 kJ mol $^{-1}$
- 834.65 kJ mol $^{-1}$
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Question 15 of 20

15. Question
0.06 grams of ethene is used to heat 200 cm $^3$ of water from 5°C to 24°C. Work out the enthalpy change of this reaction. Leave your answer to one decimal place.
- -741.3 kJ mol $^{-1}$
- 843.3 kJ mol $^{-1}$
- 132.9 kJ mol $^{-1}$
- 741.3 kJ mol $^{-1}$
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Question 16 of 20

16. Question
0.25 grams of butane is used to heat 100 cm $^3$ of water from 14.5°C to 26.4°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -1154.01 kJ mol $^{-1}$
- -2464.25 kJ mol $^{-1}$
- 324.64 kJ mol $^{-1}$
- 4962.67 kJ mol $^{-1}$
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Question 17 of 20

17. Question
0.05 grams of propane is used to heat 125 cm $^3$ of water from 10°C to 25°C. Work out the enthalpy change of this reaction.
- -6897 kJ mol $^{-1}$
- 5672 kJ mol $^{-1}$
- -7253 kJ mol $^{-1}$
- -2320 kJ mol $^{-1}$
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Question 18 of 20

18. Question
0.9 grams of butene is used to heat 250 $cm^3$ of water from 10°C to 20°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -650.22 kJ mol $^{-1}$
- 895.78 kJ mol $^{-1}$
- 895.78 kJ mol $^{-1}$
- 650.22 kJ mol $^{-1}$
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Question 19 of 20

19. Question
0.15 grams of propene is used to heat 300 cm $^3$ of water from 14°C to 30°C. Work out the enthalpy change of this reaction. Leave your answer to one decimal place.
- -5617.9 kJ mol $^{-1}$
- 3523.8 kJ mol $^{-1}$
- -9416.3 kJ mol $^{-1}$
- 7327.0 kJ mol $^{-1}$
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Question 20 of 20

20. Question
0.78 grams of pentane is used to heat 50 cm $^3$ of water from 45°C to 57°C. Work out the enthalpy change of this reaction. Leave your answer to two decimal places.
- -231.51 kJ mol $^{-1}$
- -185.23 kJ mol $^{-1}$
- 1035.99 kJ mol $^{-1}$
- -240.58 kJ mol $^{-1}$
Correct

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