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Physical Chemistry

Blazing goIITian

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16 Apr 2009 19:58:58 IST

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Acidic strength ...

None

55. Four species are listed below(i.) HCO3- (ii.) H3O+(iii) HSO4- (iv). HSO3FWhich one of the following is the correct sequence of their acid strength?(1) iv < ii < iii < I (2) ii < iii < i < iv(3) i < iii < ii < iv (4) iii < i < iv < ii

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Prakhar Banga

Blazing goIITian

Joined: 20 Dec 2008

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16 Apr 2009 20:00:31 IST

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The correct answer should be 4.

H3O+ is the most unstable of the four and gives H+ to form a neutral species so is the most acidic.

HSO3F gives H+ to be stabilized by resonance and inductive effect of F and so is the second most acidic.

NugoRama

Blazing goIITian

Joined: 11 Mar 2009

Posts: 5517

16 Apr 2009 20:01:12 IST

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u have to agree that iv is stronger than iii ..and also that i is the weakest kahani khatm..option d ......as h30+is most acidic of them all

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