What gas escapes from the tube in the reaction between carbon and copper(II) oxide?

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What gas escapes from the tube in the reaction between carbon and copper(II) oxide?

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Solution

In the reaction between carbon and copper(II) oxide (CuO), carbon acts as a reducing agent and reduces copper(II) oxide to copper metal, while the carbon gets oxidized to carbon dioxide gas. The balanced chemical equation for this reaction is:

$\text{2CuO (s) + C (s) } \rightarrow \text{ 2Cu (s) + CO}_2 \text{(g)}$

In this reaction, the gas that escapes from the tube is carbon dioxide ( $\text{CO}_2$ ). This gas is produced as a byproduct of the reduction of copper(II) oxide by carbon.

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What gas escapes from the tube in the reaction between carbon and copper(II) oxide?

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