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arrange O2 , CO2 , H2, He in inc order of vanderwall constant ' a' & 'b'?

arrange O2 , CO2 , H2, He in inc order of vanderwall constant ' a' & 'b'?

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
3 years ago
Answer :

Increasing order of ven der waal constant 'a'
He < H2 < O2 < CO2
Increasing order of constant b :
He < H2 < O2 < CO2
The value of ‘a’ depends on intermolecular forces of attraction. The value of ‘a’ is higher for easily liquefiable gases while lower for permanent gases.
The constant ‘b’ is the effective volume of the gas molecules.

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