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24 November, 15:41

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b. Write the chemical name of compound Y c. What is the nature of solution of sodium carbonate salt. Acidic salt or basic salt?

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  1. 24 November, 18:30
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    Gas x would be carbon dioxide.

    note / acid + carbonate - > salt + water + carbon dioxide

    the white precipitate would be calcium carbonate. CaCo₃

    note / this is a common eqn u need to remember.

    X - CO₂ (carbón dioxide)

    Y - CaCo₃ (calcium carbonate)

    sodium carbonate is a basic salt
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