How is a Gas Collected using Downward Delivery?
A gas that is more dense than
air can be collected by downward
delivery.
Examples of gases that can be
collected by this method
are carbon
dioxide, chlorine, hydrogen chloride and sulfur
dioxide.
A gas jar is connected by a tube to the flask that is giving off the gas.
The more dense gas falls to the bottom of the gas jar and displaces the air.
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