Which solution would cause blue litmus paper to turn red?

Question

April Romero

Chemistry

9 December, 08:34

Which solution would cause blue litmus paper to turn red?

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Francis Pollard · Answer 1

An acidic solution would turn a blue litmus paper red due to the mobile and free hydrogen (H+) ions. These hydrogen ions affect the colour property of the litmus papers and thus the colour change. A litmus paper dropped into a solution of hydrogen ions turns red to indicate that the solution is acidic.