When using PV=nRT, what is STP?

Standard temperature pressure? The volume is 22.4, how about the temperature in K and pressure in atm?

5 Answers

  • 1 decade ago
    Favorite Answer

    STP is standard temperature and pressure. Standard temperature is 0°C or 273 K. Standard pressure is 1 atm or 101.3 kPa or 760 mmHg.

    Note: The volume of one mole of a gas at STP is 22.4 L. If you don't have one mole of a gas the the volume is not 22.4 L.

  • HPV
    Lv 7
    1 decade ago

    STP refers to "Standard Temperature and Pressure" which are 1 atm and 0 C. If you put those values in the ideal gas law, you find that

    PV = nRT

    V/n = RT/P = (0.0821)(273) / (1) = 22.4 L.

    So at STP the molar volume of any gas is 22.4 L. I never liked using 0 C because it's freezing! If you recalculate V/n at 25 C (77 F) you get a molar volume of 24.2 L.

  • 1 decade ago

    Again, the other answers are correct.

    BTW, I learnt about STP in high school, but never used it again in a lifetime in chemistry. It is nearly always more straightforward to start from

    PV = nRT

  • 4 years ago

    What Is Stp

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  • 1 decade ago

    0 °C (273.15 K) and 101.325 kPa (i.e., 1 atmosphere of absolute pressure).

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