Practice Liquid-vapour Equilibrium (6.1.2) - Equilibrium

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6 sample questions

Question 1.
What happens to the vapour pressure when a closed container containing liquid is warmed?
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Consider how temperature relates to molecular kinetic energy.
Question 2.
Define dynamic equilibrium in your own words.
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Think of a balancing act.
3Question 3.
What is dynamic equilibrium?
- A static state
- Opposing forces in balance
- A temporary halt in reaction
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Think about processes that balance each other.
4Question 4.
True or False: As the temperature of a liquid increases, the equilibrium vapour pressure decreases.
- True
- False
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Consider molecular movement and energy levels.
Question 5.
A closed container contains 200mL of liquid and 300mL of its vapour at a fixed temperature. If more liquid is added, what happens to vapour pressure?
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Think about how saturation affects the system.
Question 6.
Calculate the effect of increasing temperature on the equilibrium vapour pressure of a liquid with an initial vapour pressure of 50 mmHg at 20°C.
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Remember the relation between temperature, vaporization, and pressure!

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