Question

A white coloured compound X when heated strongly, produce a colourless gas Y and an oxide Z .When Y is passed through lime water, the lime water turns milky. Z is used for white washing.  Identify X, Y and Z. Write the balanced chemical equations involved.

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Answer 1

Answer:

X is CaCO3- calcium carbonate. Y is CO2- carbondioxide. Z is CaO- calcium oxide.

CaCO3-----heat-----> CaO+CO2

Explanation:

Carbondioxide when passed through lime water turns it milky.

Calcium oxide is used for white washing.

Answer 2

Answer:

x is caco3 and y is CO2

Explanation:

dioxide when passed through quick lime water turns it milky so that's why X is equals to calcium carbonate and y is equals to carbon dioxide