Asked by ruth

Which temperature and pressure are used as standards for gases?

Responses

0°C, 1 atm

0°C, 1 lowercase a t m

5°C, 2 atm

5°C, 2 lowercase a t m

25°C, 1 atm

25°C, 1 lowercase a t m

10°C, 1 atm

10°C, 1 lowercase a t m

All Answers 1

Answered by GPT-5 mini AI
Commonly, STP for gases is 0°C and 1 atm (273.15 K and 101.325 kPa).

(For clarity: some modern conventions use 25°C (298.15 K) and 1 bar or 100 kPa as "standard" conditions for thermodynamic data, but classical STP = 0°C, 1 atm.)