An aqueous solution of glucose is labelled as 10% (w/w) . The density of solution is 1.2 gm/ml. Calculate molality , molarity and mole fraction of glucose in water.
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10%w/w means 10gm/ 100gm.
mol. wt. of glucose= C6H12O6=12×6+1×12+16×6=180
moles of glucose= 10/180=1/18mol
density = 1.2 gm/ml
volume=mass/density = 100/1.2
molarity= moles / volume in litre
molality= moles/ volume in kg
let moles of glucose be= m1
moles of water be = m2
mole fraction of glucose= m1/m1+m2
now you can get the answers. put the value, get the result
mol. wt. of glucose= C6H12O6=12×6+1×12+16×6=180
moles of glucose= 10/180=1/18mol
density = 1.2 gm/ml
volume=mass/density = 100/1.2
molarity= moles / volume in litre
molality= moles/ volume in kg
let moles of glucose be= m1
moles of water be = m2
mole fraction of glucose= m1/m1+m2
now you can get the answers. put the value, get the result
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