Question

How can you confirm that a colourless liquid given to you is pure water?....(2)

Answer 1

A very easy solution is to take a sample of colourless liquid and put on stove if it starts boiling exactly at 100 ºC then it ispure water. Any other colourless liquid such as vinegar always have different boiling point.



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Answer 2

By using universal indicator...it will turn green-yellow when we will add water to it...