Tag: quantitative chemistry

Questions Related to quantitative chemistry

Statement I : At STP, 22.4 liters of He will have the same volume as one mole of $\displaystyle { H } _{ 2 }$ (assume ideal gases).
Statement II : One mole or 22.4 liters of any gas at STP will have the same mass.

chemistry quantitative chemistry avogadro hypothesis avogadro's law avogadro law

  1. true, false

  2. false, true

  3. true, true, correct explanation

  4. true, true, not correct explanation

Show answer
Correct Option: A
Explanation:

Avogadro’s law states that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules. This empirical relation can be derived from the kinetic theory of gases under the assumption of a perfect (ideal) gas. The law is approximately valid for real gases at sufficiently low pressures and high temperatures.
At STP, all gas have same volume for 1 mol of gas and that volume is always equal to the 22.4 L.