Practice Relative Lowering Of Vapour Pressure (1.3.1) - Solutions

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6 sample questions

Question 1.
Define a solution.
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Think about mixtures in everyday life.
Question 2.
What does Raoult's Law state?
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Recall the formula involving p and x.
3Question 3.
What is Raoult’s Law?
- It states that the vapour pressure is constant.
- It relates vapour pressure to the mole fraction.
- It applies only to ideal gases.
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Remember the connection between pressure and concentration.
4Question 4.
True or False: Colligative properties depend on the chemical identity of solute.
- True
- False
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Think about freezing point depression or boiling point elevation.
Question 5.
If a solution's vapour pressure decreases from 1.0 atm to 0.8 atm upon adding a non-volatile solute, calculate the mole fraction of the solute in the solution.
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Consider how to calculate mole fractions.
Question 6.
Determine how the boiling point elevation changes if the concentration of the solute doubles. Explain mathematically.
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Review the relationship between boiling point and colligative properties.

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