In sodium hydroxide solution a) phenolphthalein becomes raspberry b) litmus turns red

In sodium hydroxide solution a) phenolphthalein becomes raspberry b) litmus turns red c) methyl orange turns red d) phenolphthalein does not change color

Phenolphthalein, litmus, methyl orange are indicators that change their color under the influence of acids and alkalis. Sodium hydroxide belongs to the class of alkalis. Phenolphthalein in an alkali solution turns crimson, litmus turns blue, methyl orange turns yellow. Answer: (a) – phenolphthalein turns raspberry.



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