Question

An aqueous solution turns red litmus solution blue. Excess addition of solution would reserve the change

Answer 1

Do you mean reverse? (reserve given in question)

here is your answer

as we know base turns red litmus into blue so bases have extremely low hydrogen ions so we have to add excess acid into that solution so that hydrogen ions can increase and turn blue litmus into red

Hope my answer will help you

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Answer 2

Answer:

HCL is the correct answer!!!!

Explanation:

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