osmosis

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osmosis

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drpkaur
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06/27/06 - 01:36 PM

which of the two has the highest osmotic pressure and why???? 1M Cacl2 or 1M Kcl...

Ivil
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06/27/06 - 01:44 PM

CaCl2 bcos 1 molecule of cacl2 dissociate into 3 ions 1ca and 2 cl ions.

osmotic pressure is a function of no of particles..

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dr_sarim
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06/28/06 - 08:07 AM

CaCl2.... osmolarity=g x c

CaCl2 dissociates into 3 molecules in solution, so 1 M of CaCl2

=3 x 1 = 3 osm/l

as for KCl , it yeilds 2 molecules

so 1 M kcl = 2 x 1 = 2 osm/l

just remember osmotic pressure is directly proportional to no. of particles

drpkaur
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06/28/06 - 08:47 AM

thanx Ivil and dr _sarim for your explanation..

mjl1717
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06/28/06 - 09:22 AM

drpkaur wrote:
thanx Ivil and dr _sarim for your explanation..

what does g and c stand for, otherwise those were CLEAR explantions!

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vallia
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06/28/06 - 10:25 AM

osmolarity= molar concentration x no of dissociable particles

1M CaCl2.....1x3=3 osm/l

1M KCl....1x2=2 osm/l

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dr_sarim
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06/28/06 - 01:13 PM

g = no. of particles

c = molar conc.

osmolarity=g x c

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