State the condition when molarity becomes …
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Posted by Tarun Goswami 7 years, 2 months ago
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Yogita Ingle 7 years, 2 months ago
Molality and molarity of a solution are identical for very dilute solution. i.e having higher amount of water as solvent.
Example : Very less amount of NaOH in high amount of around 500 g water will have same value of Molality and molarity due to presence of high amount of water .
Reason : Molality is defined as the no. of moles of solute per kilogram of solvent. Because the density of water at 25°C is around 1kg/litre thus the molality is approximately equal to molarity for dilute aqueous solutions at this temperature.
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