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Gas Experiments
| It is now possible to do simple hands-on classroom experiments to investigate the properties of gases. The equipment is simple and inexpensive. There is no need to ever use mercury again to study the gas laws. See EQ 877 and EQ 888. The number and scope of the experiments is endless. You and your students can design and perform an interesting series of experiments to answer questions such as the following:
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- What are the variables that determine the pressure of a gas?
- How is the volume of a gas, at constant temperature, affected by changes in pressure?
- How is the pressure of a gas, at constant volume, affected by changes in temperature?
- How is the pressure of a gas, at constant volume and temperature, affected by the addition of more gas?
- How is the pressure of a gaseous mixture, at constant volume and temperature, affected by the addition of samples of a different gas?
- How does one measure vapour pressure?
- Which would have the greater effect on the total pressure, at constant volume and temperature, adding 20 mL of hydrogen gas, or adding 20 mL of carbon dioxide gas?
- What is the difference between total pressure of a system, and the partial pressures of each of its components?
- How does the addition of a liquid affect the total pressure of a gaseous system?
- What variables alter the vapour pressure of a liquid?
- How is the vapour pressure of a liquid affected by changes in temperature?
- How is the vapour pressure of a liquid affected by changes in the total pressure of a gaseous system?
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