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Secondary I • 9mo.

Hi! How do we do the litmus paper test? Thanks a lot!

Science
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Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

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    Team Alloprof • 9mo.

    Hello again Adorable Moose 😉

    Thank you for your question!

    To perform the litmus paper test, it is necessary to soak the red paper and the blue paper in a solution of which we want to know the acidic or basic character (using tweezers to hold the paper).

    Next, one must examine the colors of each paper:

    • Red paper remains red in an acidic or neutral solution and turns blue in a basic solution.

    • Blue paper stays blue in a basic or neutral solution and turns red in an acidic solution.

    In short, if the solution is acidic, red litmus paper will stay red and blue litmus paper will turn red.

    If the solution is neutral, the blue litmus paper stays blue and the red litmus paper stays red.

    If the solution is basic, the blue litmus paper will stay blue and the red litmus paper will turn blue.

    Do not hesitate if you have other questions!

    Éveline 😉