Is hydrogen gas more or less dense than air?

Open in App

Solution

Hydrogen has a mass of 2 grams/ 22.4 liters of Volume.
Air is a mixture of 79 % N_2.
Nitrogen with a mass of 28 grams/22.4 liters of Volume and Oxygen with a mass of 32.
grams/22.4 liters of Volume. ( As well as small percentages of other gases such as Hydrogen, Carbon Dioxide, Helium, Methane, Neon, and others).
The average mass of the air is approximate 28.8 grams / 22.4 liters of Volume.
Hydrogen has only about 7% of the mass of atmospheric air. making it much less dense than air. This is what made Hydrogen the choice of gas for the lighter than airships.
That is until one of the Hydrogen filled ships exploded.
Now lighter than air ships use Helium with a mass of 4 grams./ 22.4 liters of volume. Twice as dense Hydrogen but still less dense than the atmospheric air and not explosive.
Therefore hydrogen gas is less dense than air.

Suggest Corrections

Similar questions

Oil is ______________ than water. (less dense/more dense)

(a) Is ammonia more dense or less dense than air ?

(b) What property of ammonia is demonstrated by the Fountain Experiment ?

Industrially, NH₃ is obtained by direct combination between nitrogen and hydrogen.
(i) Write correctly balanced equation for the direct combination of nitrogen with hydrogen.
(ii) Which metal catalyses the reaction?
(iii) Is the formation of NH₃ promoted by the use of high pressure or low pressure?
(iv) Is ammonia more dense or less dense than air?
(v) What property of NH₃ is demonstrated by fountain experiment?
(vi) Write correctly balanced equation for the reaction between NH₃ and sulphuric acid.

Is ammonia more dense or less dense than air?

Q. Assertion :Nitrogen gas will have a greater rate of effusion than oxygen gas. Reason: Lighter, less dense gases travel faster than heavier, more dense gases.

Join BYJU'S Learning Program