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Physical Chemistry

Cool goIITian

Joined:	8 Mar 2008
Post:	43

8 Mar 2008 17:33:56 IST

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368

doubt 2

None

why do we take common ion effect of hcl on water and not the reverse ( [hcl]=10^-7)

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Akhil

Blazing goIITian

Joined: 17 Jan 2008

Posts: 1451

8 Mar 2008 17:38:13 IST

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water is a very weak electrolyte while HCl is extremelyy strong ...hence it is HCl that suppresses the weaker dissociation ie that of water

LAMPARD

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Joined: 1 May 2007

Posts: 777

8 Mar 2008 17:42:26 IST

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Conc. of H+ from HCl is equal to its conc....but dat is not the case of H+ from water...so,when water dissociates,the H+ conc. of water dusnt add to the total net conc. of H+..so v dont consider the reverse...

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