What is the temperature at which the volume of gas is said to be zero?
Correct answer: C. -273.16˚C
- A. 0°C
- B. 4°C
- C. -273.16˚C
- D. -173.16 ˚C
Explanation
This point, with a temperature of -273.15 ˚C, is the theoretical point where the samples would have "zero volume". This temperature, -273.15 ˚C, is called absolute zero.
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About Absolute Zero
Absolute zero is 0 K, equal to −273.15°C, the lowest theoretical temperature on the Kelvin scale. The topic covers the relationship between temperature and molecular motion, the extrapolation of gas volume or pressure to zero, and why absolute zero cannot be reached experimentally, although particles retain quantum zero-point energy.
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