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Arrange the following acids in the decre...

Arrange the following acids in the decreasing order of their acid strength:
`HF, HCl, HBr, HI`

Text Solution

Verified by Experts

`F^(ɵ), Cl^(ɵ), Br^(ɵ)` and `I^(ɵ)` are the conjugate bases of `HF, HCl, HBr` and `HI` respectively.
Sizes of conjugate bases are as shown:

`overset("Increasing volume available to electron") rarr`
`overset("Decreasing electron density") rarr`
`overset("Decreasing electron donating tendency") rarr`
`overset("Decreasing basicity of conjugate bases")rarr`
`overset("Increasing acidity of corresponding acids")rarr`
`:. HI gt HBr gt HCl gt HF`
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