In a school laboratory the students are studing the properties of ethanoic acid through certain experiments. How can they test its acidic nature ? Give two tests .

Explanation

(i) Ethanoic acid turns blue litmus solution to red.
(ii) Ethanoic acid gives orange colour with universal indicator .
(iii) Ethanoic acid remains colourless in phenolphthalein.
(iv) On adding solid sodium carbonate or sodium hydrogen carbonate, brisk effervescence is observed .