What does standard pressure mean?

Definitions for standard pressure
stan·dard pres·sure

This dictionary definitions page includes all the possible meanings, example usage and translations of the word standard pressure.

Princeton's WordNet

  1. standard atmosphere, atmosphere, atm, standard pressurenoun

    a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade

Wikipedia

  1. standard pressure

    Standard temperature and pressure (STP) are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data. The most used standards are those of the International Union of Pure and Applied Chemistry (IUPAC) and the National Institute of Standards and Technology (NIST), although these are not universally accepted standards. Other organizations have established a variety of alternative definitions for their standard reference conditions. In chemistry, IUPAC changed its definition of standard temperature and pressure in 1982: Until 1982, STP was defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 atm (101.325 kPa). Since 1982, STP has been defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 105 Pa (100 kPa, 1 bar).STP should not be confused with the standard state commonly used in thermodynamic evaluations of the Gibbs energy of a reaction. 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). However, a common temperature and pressure in use by NIST for thermodynamic experiments is 298.15 K (25°C, 77°F) and 1 bar (14.5038 psi, 100 kPa). NIST also uses "15 °C (60 °F)" for the temperature compensation of refined petroleum products, despite noting that these two values are not exactly consistent with each other.The International Standard Metric Conditions for natural gas and similar fluids are 288.15 K (15.00 °C; 59.00 °F) and 101.325 kPa.In industry and commerce, standard conditions for temperature and pressure are often necessary to define the standard reference conditions to express the volumes of gases and liquids and related quantities such as the rate of volumetric flow (the volumes of gases vary significantly with temperature and pressure): standard cubic meters per second (Sm3/s), and normal cubic meters per second (Nm3/s). However, many technical publications (books, journals, advertisements for equipment and machinery) simply state "standard conditions" without specifying them; often substituting the term with older "normal conditions", or "NC". In special cases this can lead to confusion and errors. Good practice always incorporates the reference conditions of temperature and pressure. If not stated, some room environment conditions are supposed, close to 1 atm pressure, 293 K (20 °C), and 0% humidity.

ChatGPT

  1. standard pressure

    Standard pressure is a basic reference point used in thermodynamics and physical chemistry to define various properties or behavior of gases. It is traditionally defined as an absolute pressure of 100,000 pascal (Pa), equivalent to 1 bar or approximately equal to the atmospheric pressure at sea level. However, in the International Union of Pure and Applied Chemistry (IUPAC), standard pressure is defined as exactly 100,000 Pa.

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Numerology

  1. Chaldean Numerology

    The numerical value of standard pressure in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of standard pressure in Pythagorean Numerology is: 4

Examples of standard pressure in a Sentence

  1. Baptiste Journaux:

    We determined that it remains stable at standard pressure up to about minus 50 Celsius (minus 58 degrees Fahrenheit). So if you have a very briny lake, for example in Antarctica, that could be exposed to these temperatures, this newly discovered hydrate could be present there.

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"standard pressure." Definitions.net. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.definitions.net/definition/standard+pressure>.

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