Question

give a reason why turns into moist litmus blue

Answer 1

Under acidic conditions, the solution isred, and under alkaline conditions, the solution is blue. Chemical reactions other than acid-base can also cause acolor change to litmus paper. For instance, chlorine gas turns blue litmus paper white – the litmus dye is bleached, because of presence of hypochlorite ions.

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Answer 2

Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue. Chemical reactions other than acid-base can also cause a color change to litmus paper. For instance, chlorine gas turns blue litmus paper white – the litmus dye is bleached, because of presence of hypochlorite ions.