Question

Identify the following solutions, whether they are acid or base.

Solution	Change in Indicator			Acid/Base
	Litmus	Phenolphthalein	Methyl orange
1.	--	No change	--
2.	--	--	Orange colour turns red
3.	Red litmus turns blue	--	--

Answer 1

Solution	Change in Indicator			Acid/Base
	Litmus	Phenolphthalein	Methyl orange
1.	Blue litmus turns red	No change	The orange colour turns red	Acid
2.	Blue litmus turns red	No change	Orange colour turns red	Acid
3.	Red litmus turns blue	Colourless to pink	The orange colour turns yellow	Base