TestUstad
Moderate

1 liter of a gas weighs 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm, at which of the following temperatures will 1 L of the same gas weigh 1 g?

Correct answer: A. 450 K

  • A. 450 K
  • B. 800 K
  • C. 600 K
  • D. 900 K

Explanation

So we know that, P₁V₁ / P₂V₂ = W₁T₁ / W₂T₂ Substituting in the above formula we get, => 1 × 1 / 0.75 × 1 = 2 × 300 / 1 × T₂ => 1 / 0.75 = 600 / T₂ Cross Multiplying we get, => T₂ × 1 = 600 × 0.75 => T₂ = 450 K

Last updated

About Ideal Gas Equation

The ideal gas equation, PV = nRT, relates pressure, volume, amount and absolute temperature when gas particles are assumed to have negligible volume and no intermolecular forces. Applications include finding molar mass, density or an unknown gas variable, with careful use of Kelvin temperature and consistent units, and comparison with real-gas behaviour.

Practise Gases

443 free Gases MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Gases testAll Gases MCQs

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

AKU Chemistry45 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQs

Related questions

0.2 g of a gas X occupies a volume of 0.44 L at same pressure and temperature. Under identical conditions of P and T, 0.1 g of CO2 gas occupies 0.32 L. Gas X can be :

0.20 g of carbon dioxide at 25 °C has 844 torr pressure. After heating, the pressure increases to 2.24 atm. What is the temperature?

1 liter flask contains nitrogen along with a drop or two of water at 40° C, the total pressure being 760 Torr. If all the contents are transferred to another flask of 0.5L at the same temperature. The pressure of nitrogen setup in the second flask will be: (aqueous tension at 40 °C 55 torr):

100 m3 of a gas at 3 atm pressure and 27 oc is transferred to a chamber of 300 m3 volume maintained at a temperature of 327 oc. What will be the pressure in chamber?

273 mL of a gas at STP was taken to 27oC and 600 mm pressure. The final volume of the gas would be: