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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