Question

acids turn blank litmus paper red

Answer 1

Answer:

=> acid turns a red litmus to Blue.

Explanation:

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Answer 2

Light Blue litmus paper turns redunder acidic conditions and red litmuspaper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). ... Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue.