Question

how would you confirm that the colourless liquid given to you , is a pure water?​

Answer 1

If the colorless liquid turns Blue cobalt chloride water pink, it can be concluded that the liquid is water

Hope it helps

Answer 2

Answer:

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