Chemistry - Hydrogen and Its compound Question with Solution | TestHub
Based on the nuclear spin, hydrogen shows two types of isomers(i) ortho hydrogen (ii) para hydrogen ortho hydrogen, molecular form of hydrogen has same spin of nucleus, where as in para hydrogen, the molecular form of hydrogen has opposite spin of nucleus.
At room temperature a mixture of ortho and para hydrogen is taken for experiment now temperature of this mixture is reduced to (very low). then final mixture will contain -
Options:
Answer:
Solution:
At room temperature, hydrogen exists as a mixture of ortho-hydrogen (75%) and para-hydrogen (25%).
Para-hydrogen is the more stable and lower energy form compared to ortho-hydrogen.
When the temperature is lowered to −253°C, ortho-hydrogen converts into para-hydrogen.
At very low temperatures, the equilibrium shifts almost completely towards para-hydrogen.
Final mixture contains only para hydrogen.
