Bases tum phenophthalein into .................. colour.

Acids tum methyle orange into ...................... colour

Ammonia tums yellow turmeric solution .................. .

Which colour is produced when a drop of phenophthalein is added to HCl solution.

Which colour is produced when a drop of phenophthalein is added to NaOH solution.

(a). What is produced if an acid is added to a base? (b). Why does dry HCl gas not change the colour of dry litmus paper? (c). What colour does phenolphthalein indicator tum when added to an alkali (such as sodium hydroxide)?

Prepare a table based on the colour responses of acid, base and salt with indicators such as red litmus paper, blue litmus paper, methyl orange and phenolphthalein indicators.