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A compound X is heated with C(2)H(5) OH ...

A compound X is heated with `C_(2)H_(5) OH` and `H_(2)SO_(4)` the fumes produced burn with green flame. The compound X is

A

`H_(3)BO_(3)`

B

`Na_(2)B_(4)O_(7). 10 H_(2) O`

C

`K_(3)BO_(3)`

D

none of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the information given and identify the compound X based on the reactions and properties described. ### Step-by-Step Solution: 1. **Identify the Reactants**: The problem states that a compound X is heated with ethanol (C₂H₅OH) and sulfuric acid (H₂SO₄). 2. **Understand the Reaction**: When ethanol is heated with concentrated sulfuric acid, a dehydration reaction occurs. This means that water is removed from the ethanol, leading to the formation of an alkene. 3. **Determine the Product**: The dehydration of ethanol (C₂H₅OH) typically produces ethene (C₂H₄) when heated at high temperatures (around 443 K). The reaction can be represented as follows: \[ C_2H_5OH \xrightarrow{H_2SO_4, \Delta} C_2H_4 + H_2O \] Here, ethene (C₂H₄) is the product, and water (H₂O) is a byproduct. 4. **Analyze the Flame Color**: The question mentions that the fumes produced burn with a green flame. Ethene is known to burn with a green flame due to the presence of copper compounds in the flame test, which can produce a green color. 5. **Conclusion**: Based on the above analysis, the compound X that is heated with ethanol and sulfuric acid to produce fumes that burn with a green flame is ethene (C₂H₄). ### Final Answer: The compound X is ethene (C₂H₄). ---
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