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When Cu is reacted with hot concentrated...

When Cu is reacted with hot concentrated solution of `H_(2) SO_(4)` then the gas obtained is

A

`O_(2)`

B

`H_(2)`

C

`SO_2`

D

`SO_3`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the gas obtained when copper (Cu) reacts with hot concentrated sulfuric acid (H₂SO₄), we can follow these steps: ### Step 1: Understand the Reaction When copper reacts with concentrated sulfuric acid, it undergoes a redox reaction. Copper is oxidized, and sulfuric acid is reduced. ### Step 2: Write the Balanced Chemical Equation The balanced chemical equation for the reaction between copper and hot concentrated sulfuric acid can be written as: \[ \text{Cu} + 2 \text{H}_2\text{SO}_4 \rightarrow \text{CuSO}_4 + \text{SO}_2 + 2 \text{H}_2\text{O} \] ### Step 3: Identify the Products From the balanced equation, we can see that the products of the reaction are: - Copper(II) sulfate (CuSO₄) - Sulfur dioxide (SO₂) - Water (H₂O) ### Step 4: Identify the Gas Produced Among the products, the gas produced in this reaction is sulfur dioxide (SO₂). ### Conclusion Thus, the gas obtained when copper is reacted with hot concentrated sulfuric acid is **sulfur dioxide (SO₂)**. ### Final Answer The correct answer is **SO₂**. ---
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