Mole ConceptHard
Question
The vapour density of a sample of hydrogen fluoride gas is measured by an experiment as 20. It may represent that (F = 19)
Options
A.Some molecules of hydrogen fluoride are dissociated.
B.Some molecules of hydrogen fluoride are in dimer form.
C.All hydrogen fluoride molecules are in dimer form.
D.Some hydrogen fluoride molecules are in trimer form.
Solution
M = 20 × 2 = 40
Hence, either all HF molecules are in dimer form or some molecules may be in trimer form.
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