Explain the term standard temperature and pressure (SLP). State the kinetic theories of gases.?

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  • 10 years ago
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    In chemistry, standard condition for temperature and pressure (informally abbreviated as STP) are standard sets of conditions for experimental measurements, 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. The current version of IUPAC's standard is a temperature of 0 °C (273.15 K, 32 °F) and an absolute pressure of 100 kPa (14.504 lb/in², 0.986 atm), while NIST's version is a temperature of 20 °C (293.15 K, 68 °F) and an absolute pressure of 101.325 kPa (14.696 lb/in², 1 atm). International Standard Metric Conditions for natural gas and similar fluids is 288.15 Kelvin and 101.325 kPa.

    The kinetic theory of gases states that gases consist of molecules moving around and bouncing off each other with individual kinetic energies and speeds that are proportional to temperature. The higher the temperature, the faster the molecules are moving, and the harder they are hitting the walls of their container. Thus, the higher the temperature, the higher the gas pressure.

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