Interpretation:
The boiling point elevation and freezing point depression of a solution containing 50 g of glucose in 500 g of water needs to be determined.
Concept introduction:
Boiling point elevation is calculated as follows:
Here,
Depression of freezing point is calculated as follows:
Molality of solution is calculated as follows:
Also,
Answer to Problem 52SSC
The boiling point elevation and freezing point depression of a solution containing 50 g of glucose in 500 g of water are 0.285°C and 1.03°Crespectively.
Boiling point elevation
Data given:
Mass of glucose=50g
Mass of water=500g
Again,
Number of moles of glucose
=0.556m
Kb of water = 0.512
=0.285°C
Depression of freezing point
molality of the solution = 0.556 m
Kf of water = 1.86
=1.03°C
The boiling point elevation and freezing point depression of a solution containing 50 g of glucose in 500 g of water are 0.285°C and 1.03°C respectively.
Explanation of Solution
Boiling point elevation
Data given:
Mass of glucose=50g
Mass of water=500g
Again,
Number of moles of glucose
=0.556m
Kb of water = 0.512
=0.285°C
Depression of freezing point
molality of the solution = 0.556 m
Kf of water = 1.86
=1.03°C
The boiling point elevation and freezing point depression of a solution containing 50 g of glucose in 500 g of water are 0.285°C and 1.03°C respectively.
Chapter 14 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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