120g of sugar dissolve in 750ml of solution find its molarity
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Answer:
Molality =
mass of solvent in kg
no of moles of solute
Molar mass of glucose = 180g
Mass of glucose =10
No of moles of glucose =
180
10
=0.0556mol
the solution of glucose in water which is 10% w/W means 10 g of glucose in 100 g of solution
Mass of solvenyt=100-10=90 g =0.090 kg
Molality =
0.090
0.556
=0.617m
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