Define STP and NTP ?

STP:

• STP for standard temperature pressure.
• It is set up by the IUPAC.
• In the STP system, both pressure and temperature are in their typical form.
• At STP pressure is equal to 1 bar or 0.987 atm and temperature is equal to 273.15 K.
• Under these conditions, the volume of a gas is 22.4 liters.

NTP:

• It is commonly used as a standard condition.
• NTP stands for normal temperature pressure.
• At NTP, pressure is equal to 1 atm and temperature is equal to 293 K.
• Under these conditions, the volume of 1 mol of gas is 24.0548 liters