IB · B · multiple choice
The particulate nature of matter · Question 3
The particulate nature of matter · Original GioPhysics question with a detailed, mark-by-mark answer guide.
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multiple choice1 mark
A fixed mass of ideal gas is at 27 °C. It is heated at constant volume until its pressure has doubled. What is the new temperature?
- A
54 °C
- B
327 °C
- C
600 °C
- D
873 °C
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Answer overviewCorrect answer: B — 327 °C
01
1 markAnswer and reasoning
How to approach it
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
The correct choice is B: 327 °C
- 2
A doubles the Celsius temperature, which is the error the question is set to catch. The gas laws work in kelvin: 300 K doubles to 600 K, which is 327 °C.
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