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Molarity and molality of a solution of a liquid (mol wt.50) in aqueous solution is 9 and 10 respectively . What is the density of solution??
Molarity = moles of solute/volume of soln. in ltres. 9 mol/litre = (w/50)/(m/d)...................................(1)10 molality means 10 moles are present in 1 kg water.molar mass = 500 gm is present in 100 gm water. mass of solution = 1500 gm.Volume = 9M/10mol and volume = 1.1111 ldensity comes to = 1500/1111 = 1.350 g/l
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