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21 July, 01:54

In the presence of a base, blue litmus paper will.

O turn purple

stay blue

to turn red

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Answers (2)
  1. 21 July, 02:07
    0
    In the presence of a base, blue litmus paper will turn red ...
  2. 21 July, 05:04
    0
    In the presence of a base the blue litmus paper would remain blue.

    Explanation:

    This is because the litmus paper will react depending on the pH of the solution added. If the solution is acidic pH 7 the litmus paper will turn blue. If the litmus paper is blue when a base is added it will remain blue.
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