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View Full Version : How can we prove that a colorless liquid placed before us is pure water


hani123
Sep 20, 2010, 09:06 AM

Unknown008
Sep 20, 2010, 09:31 AM
What have you learnt about the properties of pure water?

Pure water..

What do you think can be used to test if the water is pure?

DrBob1
Sep 20, 2010, 08:17 PM
The adage "You can't prove a negative" is true.
The best you could say is that any possible impurity is below the non-detect level.
This will be expensive!