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Cool goIITian

Joined:	11 Jul 2007
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30 May 2008 18:40:51 IST

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What is MOLALITY of pure water please tell me i ma confused rates assured

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What is MOLALITY of pure water please tell me i ma confused

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Priyesh

Blazing goIITian

Joined: 18 Feb 2007

Posts: 1042

30 May 2008 18:43:51 IST

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1000/18 = 55.55 mol/kg

saketsood

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Joined: 29 May 2008

Posts: 13

31 May 2008 09:55:03 IST

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The density of water is 1g/cc(we know)

therefore 1000ml of water = 1000g of water as ( d=m/v)

Now MM of water is 18 g

therefore moles in 1000g of water = 1000/18=55.5 which is molality

as molality is no of moles in 1000g of solvent & water is pure so considered to be solvent

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