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why isomerization is slow when the ortho form of hydrogen is more stable than the para hydrogen

why isomerization is slow when the ortho form of hydrogen is more stable than the para hydrogen

Grade:11

1 Answers

Arun
25750 Points
5 years ago

Ortho Hydrogen is not more stable than para hydrogen at all temperatures.

At higher temperatures, ortho form is more stable (ortho:para=3:1)

At lower temperatures, para form is more stable.

Moreover, the maximum % of ortho form is 75%. 100% pure ortho form can never be obtained; while 100% pure para form is obtained at about 20K.

Therefore, the stability varies with temperature.

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