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2 July, 19:54

Predict whether litmus paper will turn red or blue when dipped in:

a. washing powder (containing sodium carbonate)

b. orange juice (containing citric acid)

c. lemonade (containing H2CO₃)

d. cleaner (containg NH₃)

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  1. 2 July, 21:04
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    a. blue, b. red, c. red, d. basic - blue

    Explanation:

    a. washing powder (containing sodium carbonate) basic - blue

    b. orange juice (containing citric acid) - acidic - red

    c. lemonade (containing H2CO₃) - acidic - red

    d. cleaner (containg NH₃) - basic - blue
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