Calculate the concentration of aqueous solution of glucose obtained by dissolving 10gm of glucose in 1000gm of water
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Given : 10 grams of glucose is dissolved in 1000 grams of water.
To find : The concentration of aqueous solution of glucose.
Solution : given weight of glucose = 10 g
molecular weight of glucose = 180 g/mol
no of moles of glucose = 10/180 = 1/18
mass of water = 1000 g
molality of glucose = no of moles of glucose/mass of solvent in kg
= (1/18)/1 molal
= 0.055 molal
mass of solution = 1000 + 10 = 1010 g
w/W % = mass of solute/mass of solution × 100
= 10/1010 × 100
= 1000/1010
= 0.99 %
Therefore the concentration of glucose is 0.99 % w/W .
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