Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 decade ago

Which combination of temperature and pressure correctly describes standard temperature and pressure, STP?

A) 0C and 101 kPa

B) 1C and 0 kPa

C) 0C and 22.4 kPa

D) 100C and 100 kPa

make sure you state what letter it is . A B C or D thanks!

5 Answers

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  • 1 decade ago
    Favorite Answer

    A]

    In chemistry and other sciences, STP or standard temperature and pressure is a standard set of conditions for experimental measurements, to enable comparisons to be made between sets of data. Internationally, the current STP defined by the IUPAC (International Union of Pure and Applied Chemistry) is an absolute pressure of 100 kPa (1 bar) and a temperature of 273.15 K (0 °C).[1] Other organizations have established a variety of alternative definitions for the standard reference conditions of temperature and pressure.

    In industry and commerce, it is necessary to define the standard reference conditions of temperature and pressure when expressing a gas volume or a volumetric flow rate because the volume of a gas varies with the temperature and pressure of the gas. The available data on the various definitions of standard reference conditions clearly indicates that there is no universally accepted definition of the standard conditions of temperature and pressure. For that reason, simply stating that a gas flow rate is 10,000 m³/h (i.e. cubic meters per hour) at "standard conditions" or at "STP" has no meaning unless the reference conditions that were applied are clearly stated.

  • Anonymous
    1 decade ago

    A is the correct answer but it is not in the correct units for STP. The 0C should be 273 Kelvin and the 101kPa should be 1 atm

  • 5 years ago

    standard temperature is 273 degrees kelvin standard pressure is 1 atm (atmosphere) an alternate way to look at it is 0 degrees celcius (temp) and 750 mmHg (millimeters of mercury - pressure)

  • Anonymous
    1 decade ago

    A) 0c and 101kPa

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  • 1 decade ago

    definitely D.

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