Aglicose solution contains 45.2 g of sucrose (342.3 g/mol) in 155 g of water (18 g/mol),...

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Aglicose solution contains 45.2 g of sucrose (342.3 g/mol) in 155 g of water (18 g/mol), Determine the boiling point of this

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Answer 1

Answer #1

Mass of sucrose = 45.2 g.

Molar mass of sucrose = 342.3 g/mol

Moles of sucrose = mass / molar mass = 45.2 / 342.3 = 0.132 mol

Weight of solvent = 155 g. = 0.155 kg

Molality = moles of solute / weight of solvent in kg = 0.132 / 0.155 = 0.852 mol/kg

Kb = 0.512 degree C/m

Boiling point of water = 100 degree C

Elevation in boiling point = Kb X m

Tb - T0 = 0.512 X 0.852

Tb - 100 = 0.436

Tb = 0.436 + 100

Tb = 100.436

Tb = Boiling poing of solution = 100.436 degree C

(C) 100.44 degree C

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Answer 2

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