Question

When heated, calcium carbonate goes through a chemical reaction, and produces calcium oxide (quick lime) powder and carbon dioxide gas. A chemist performed this reaction in a lab and found that the mass of the calcium oxide (quick lime) was less than the mass of the calcium carbonate. What is the reason behind this decrease in mass?
A.
Calcium oxide crystals produced break up at room temperature, leading to the difference in mass.
B.
The carbon dioxide molecules produced were unstable and lighter in mass.
C.
The calcium oxide crystals produced were unstable and lighter in mass.
D.
Carbon dioxide is produced, and as a gas, it was not captured to measure its mass.

Answer 1

Answer:

the correct option is D

Answer 2

Answer:

Explanation:

D) carbon dioxide is produced ,and as a gas, it was not captured to measure its mass.

when the calcium carbonate was taken with was a single compound so in order to break the compound pylrosis was done and the due the breaking of bond we got two products i.e. calcium oxide and carbon dioxide and as carbon dioxide is a gas it got liberated due to which the mass of Cao was lesser than that of calcium carbonate.

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