Question

In an experiment to test the pH of a given sample using pH paper, four student recorded the following observations

Sample taken turned to pH paper colour

I Water, blue

II Dilute HCI, red

Il Dilute NaOH, blue

IV Dilute Ethanoic Acid, Orange

Which one of the above observations is incorrect?​

Answer 1

Answer:

4-Dilute Ethanoic Acid, Orange.

Answer 2

Answer:

I (Water, Blue)

Water when tested on the pH paper gives a neutral result ( green colour ).