what is the difference between STP …
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Posted by Meenu Bhargava 5 years, 9 months ago
- 5 answers
Pranav Punari 5 years, 9 months ago
Robinpreet Kaur 5 years, 9 months ago
Harsh Mishra 5 years, 9 months ago
STP stands for Standard Temperature and Pressure.
NTP stands for Normal Temperature and Pressure.
STP is set by the IUPAC as 0°C and 100 kPa or 1 bar.
Many old books and online sources say that standard pressure is 101.325 kPa (the old IUPAC standard that was changed in 1982), but It defer to the current IUPAC standard of 100 kPa.
NTP is set at 101.325 kPa but uses 20°C as the temperature.
Note:
0°C = 273.15K
20°C = 293.15K
At STP: Pressure = 1 bar = 0.987 atm
Temperature = 273 K or 0°C
At NTP: Pressure = 1 atm
Temperature = 293 K or 20°C
Also,
1 atm = 1.013 bar
1 atm = 76.0 cm
1 atm = 0.760 m
Here,
cm = centimetre
m = metre
atm = atmosphere
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Anjali Kumari??? 5 years, 9 months ago
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