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Collecting Gas.

The method used to collect a particular gas depends on
1)  Is the gas more or less dense than air?
2)   Is the gas soluble in water?

All gases can be collected using a gas syringe.

If a gas is less dense than air it can be collected by upward delivery.

If a gas is more dense than air it can be collected by downward delivery.

If a gas is not soluble (or only slightly soluble) in water
it can be collected over water.  

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Copyright © 2008 Dr. Colin France. All Rights Reserved.