calculate molality and normality of 12%w/w MG(OH)2 solution. The density of a solution is 1.023 g/ml.
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2M means 2 moles of ethanol in 1L of solution.
∴2 moles= 46×2=92g of ethanol
Mass of solution= 1000×1.025=1025g
Mass of H
2
O=1025−92=933g
∴ Molality=
Mass of water in kg
Moles of solute
=
933
2
×1000=2.143M
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