Since 1982, STP has been defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 bar (100 kPa, 10 5 Pa). NIST uses a temperature of 20 °C (293.15 K, 68 °F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). [3] . This standard is also called normal temperature and pressure (abbreviated as NTP).

在化学领域，国际纯化学和应用化学联合会（IUPAC）在1982年改变了标准温度和标准压力（STP）的定义： 在1982年以前，标准状况定义为0 ℃（273.15 K）、101325 / 10 5 Pa（1 atm）。1摩尔的理想氣體在STP下占有的體積為22.414升（L）。

2023年5月18日 · STP is the standard temperature and pressure and NTP is the normal temperature and pressure. As per IUPAC, the STP value of temperature and pressure for gas is 273.15 K and 0.987 atm respectively. The NTP value …

STP - Standard Temperature and Pressure - is defined by IUPAC (International Union of Pure and Applied Chemistry) as air at 0 o C (273.15 K, 32 o F) and 10 5 pascals (1 bar). STP - commonly used in the Imperial and USA system of units - as air at 60 o F (520 o R, 15.6 o C) and 14.696 psia (1 atm, 1.01325 bara)

Standard temperature and pressure (STP) means a temperature of 273.15 K (0 °C or 32 °F) and a pressure of 1 atm (101.35 kPa). In practice, this corresponds to the freezing point of pure water at atmospheric pressure at sea level. At STP, one mole of gas occupies exactly 22.4 liters of volume (molar volume).

The International Union of Pure and Applied Chemistry (IUPAC) defines standard temperature and pressure as follows: A temperature of 0 0 C or 273.15 K A pressure of 10 5 Pa or 1 bar (formerly 101.325 kPa or 1 atm, but IUPAC has changed it since 1982)

The conditions at STP are: Temperature: 273.15 K (0°C or 32°F) Pressure: 10 5 Pascals (formerly 1 atm, but IUPAC has since changed this standard). Since the volume of a gas depends on the temperature and pressure, one mole of an ideal gas at STP conditions has a volume of 22.4 liters. This volume can be found using the ideal gas law,

NIST uses a temperature of 20 °C (293.15 K, 68 °F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). This standard is also called normal temperature and pressure (abbreviated as NTP ).

2016年1月20日 · STP is Standard Temperature and Pressure . Standard Temperature is #0^oC# in Celsius or #273K# in Kelvin. Standard Pressure is #1# Atmosphere (atm) #760# Torrcellis (torr) #760# Millimeters of Mercury (mmHg) #101.325# KiloPascals (kPa)

Standard Temperature: STP guidelines establish the standard temperature at 0°C, which is equal to 273.15 K in the Kelvin scale. Standard Pressure: The standard pressure at STP is 1 atmosphere (atm), which equates to 101.3 kilopascals (kPa) or …