Question

(1) Give two examples each of natural and artificial indicators.
(ii) An aqueous solution turns red litmus solution blue. Excess addition of which solution
would reverse the change - ammonium hydroxide solution or hydrochloric acid?
(iii) What will be the change in colour when a few drops of phenolphthalein are added to a
solution having pH 8.5?
(iv) What is a universal indicator?​

Answer 1

Answer:

natural indicator is half and litmus artificial is litmus paper and phenopthalene