The operational range of a constant volume hydrogen gas thermometer is _____________ °C?
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Answer: B. 0 to 100
Explanation
The operational range of a constant volume hydrogen gas thermometer is 0 to 100 degrees Celsius. Hydrogen gas obeys ideal gas laws closely within this specific temperature calibration span. Keeping volume constant allows precise temperature determination by measuring corresponding pressure changes. Constant volume gas thermometers relate absolute temperature directly to gas pressure via Charles law. Hydrogen gas remains stable and resists condensation across the standard 0 to 100 degree Celsius range. Precise manometric scales measure pressure changes corresponding to thermal expansion of the gas.
Primary temperature calibration laboratories use constant volume gas thermometers to establish reference standards. The 0 to 100 degree Celsius span covers the fundamental ice and steam calibration reference points. Understanding gas thermometer limits ensures accurate fundamental temperature scale realizations. A range of minus 10 to 20 degrees Celsius is too narrow and fails to utilize standard calibration points. Ranges of 100 to 500 degrees Celsius exceed standard hydrogen gas thermometer calibration limits safely. Ranges of 400 to 1000 degrees Celsius require nitrogen or helium gases rather than standard hydrogen.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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