why in thermodynamics we use NTP as 273 K while it is 298K
Answers
Answer:
Standard conditions, or STP, and standard state both are used in scientific calculations, but they don't always mean the same thing.
Key Takeaways: Standard Temperature and Pressure (STP) vs Standard State
Both STP and standard state conditions are commonly used for scientific calculations.
STP stands for Standard Temperature and Pressure. It is defined to be 273 K (0 degrees Celsius) and 1 atm pressure (or 105 Pa).
The definition of standard state conditions specifies 1 atm of pressure, that liquids and gases be pure, and that solutions be at 1 M concentration. Temperature is not specified, although most tables compile data at 25 degrees C (298 K).
STP is used for calculations involving gases that approximate ideal gases.
Standard conditions are used for any thermodynamic calculation.
Values cited for STP and standard conditions are based on ideal conditions, so they may deviate slightly from experimental values.
Answer:
Standard conditions, or STP, and standard state both are used in scientific calculations, but they don't always mean the same thing.
Key Takeaways: Standard Temperature and Pressure (STP) vs Standard State
Both STP and standard state conditions are commonly used for scientific calculations.
STP stands for Standard Temperature and Pressure. It is defined to be 273 K (0 degrees Celsius) and 1 atm pressure (or 105 Pa).
The definition of standard state conditions specifies 1 atm of pressure, that liquids and gases be pure, and that solutions be at 1 M concentration. Temperature is not specified, although most tables compile data at 25 degrees C (298 K).
STP is used for calculations involving gases that approximate ideal gases.
Standard conditions are used for any thermodynamic calculation.
Values cited for STP and standard conditions are based on ideal conditions, so they may deviate slightly from experimental values.