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Consider the van der Waals constants, a and b, for the following gases.

 Gas                               Ar        Ne     Kr      Xe

 a/(atm dm6 mol−2)        1.3       0.2     5.1   4.1

 b/(10−2 dm3 mol−1)      3.2       1.7     1.0   5.0

 Which gas is expected to have the highest critical temperature?

(a)

Ne

(b)

Kr

(c)

Xe

(d)

Ar



Question ID - 52581 | SaraNextGen Top Answer

Consider the van der Waals constants, a and b, for the following gases.

 Gas                               Ar        Ne     Kr      Xe

 a/(atm dm6 mol−2)        1.3       0.2     5.1   4.1

 b/(10−2 dm3 mol−1)      3.2       1.7     1.0   5.0

 Which gas is expected to have the highest critical temperature?

(a)

Ne

(b)

Kr

(c)

Xe

(d)

Ar

1 Answer
127 votes
Answer Key / Explanation : (b) -

Critical temperature =

So, species with greatest value of   has greatest value of critical temperature i.e. Kr.

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