Strong acid versus strong base can be titrated using Methyl orange (3−4.4),Methyl red (4.3−6.3),Phenolphthalein (8−10).
Weak acid versus strong base can be titrated using Phenolphthalein (8−10).
Strong acid versus weak base can be titrated using Methyl orange (3−4.4),Methyl red (4.3−6.3).
Weak acid versus weak base has no soluble indicator .