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8 Apr 2010 19:08:49 IST

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why pure water has equal molality and molarity at 4c?

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why pure water has equal molality and molarity at 4c?

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Sagar Saxena

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30 Jul 2012 19:45:29 IST

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In dilute solutions... ie closer a solution is to pure water the closer molality and molarity come to equalling each other. This is because the molality uses mass and molarity uses volume, the ratio of these two (mass and volume) is density, and water has the density of 1 therefore the mass and volume are equal to each other. THEREFORE calculating the molarity of water is the same as calculating the molality of water

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