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Testing the acids and bases with indicat...

Testing the acids and bases with indicators viz .. Red litmus, blue litmus, phenolphthalein solution and methyl orange solution.

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From th e above table, we conclude that the acids and bases change the colour of in dicators.
Acids : `HCl,H_2SO_4.HNO_3.CH_3COOH`
Bases : `N/AOH,KOH,Mg(OH)_2,NH_4OH,Ca(OH)_2`
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Prepare a table based on the colour responses of acid, base and salt with indicators such as red litmus paper, blue litmus paper, methyl orange and phenolphthalein indicators.

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Knowledge Check

  • The colour of phenolphthalein indicator in basic solution is

    A
    yellow
    B
    green
    C
    pink
    D
    orange

  • A solution turns red litmus blue, its pH is likely to be

    A
    1
    B
    4
    C
    5
    D
    10

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