If you are given a 2M NaOH solution having density 1gm/ml,then find the molality of solution????[M=molarity]

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If you are given a 2M NaOH solution having density 1gm/ml,then find the molality of solution????[M=molarity]

[From: ] [author: ] [Date: 11-05-04] [Hit: ]

?Mass of water = 920gMol NaOH = 2.You have 2.0mol in 920g waterMol in 1000g water = 2.0*1000/920 = 2.174 mol in 1kg solventMolality = 2.......

Chemistry problem????

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Take 1 litre of the solution
This has mass = 1000g ( from the density given)
This contains 2 mol NaOH = 40*2g = 80g
Mass of water = 920g
Mol NaOH = 2.0mol
You have 2.0mol in 920g water
Mol in 1000g water = 2.0*1000/920 = 2.174 mol in 1kg solvent
Molality = 2.174m

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