Question

what are the difference between STP and NTP​

Answer 1

Answer:

Explanation:

STP stands for Standard Temperature and Pressure, and NTP stands for Normal Temperature and Pressure. ... STP is : temperature of 273.15 K (0 °C or 32 °F) and an absolute pressure of 101.325 kPa (14.7 psi, 1 atm, 1.01325 bar

Answer 2

Answer:

STP stands for Standard Temperature and Pressure, and NTP stands for Normal Temperature and Pressure.

             

Explanation:

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 I 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

In simple language:

STP stands for Standard Temperature and Pressure.

NTP stands for Normal Temperature and Pressure.

At STP:  

l

Pressure = 1 bar = 0.987 atm

m

m

m

l

l

Temperature = 273 K or 0°C

At NTP:  

Pressure = 1 atm

m

m

m

l

l

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