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  • On dropping a small piece of sodium in a test tube containing carbon compound 'X' with the molecular formula, a brisk effervescence is observed and a gas 'Y' is produced. On bringing aa burning splinter at the mouth of the test tube the

On dropping a small piece of sodium in a test tube containing carbon compound 'X' with the molecular formula C2​H6​O , a brisk effervescence is observed and a gas 'Y' is produced. On bringing aa burning splinter at the mouth of the test tube the gas evolved burns with a pop sound. Identify 'X' and 'Y'. Also, write the chemical equation for the reactions. write the name and structure of the product formed, when you heat 'X' with excess cons. sulphuric acid 

 

 

 

 
 
 
 
 

Answers (1)

If a small piece of sodium is dropped into ethanol, it reacts steadily to give off bubbles of hydrogen gas and leaves a colorless solution of sodium ethoxide CH3?CH2?ONa. Hydrogen gas that is released burns with a pop sound.

 

1. X is ethanol - CH3?CH2?OH

2. Y is Sodium ethoxide  - CH3?CH2?ONa

3. Chemical equation for the reaction is:

2 \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}+2 \mathrm{Na} \rightarrow 2 \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{ONa}+\mathrm{H}_{2} 

4. When Ethanol is heated with excess of conc. sulphuric acid, it leads to dehydration of ethanol to ethene - CH2?=CH2?.

\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH} \stackrel{\text { conc. } \mathrm{H}_{2} \mathrm{SO}_{4}}{\longrightarrow} \mathrm{CH}_{2}=\mathrm{CH}_{2}+\mathrm{H}_{2} \mathrm{O}

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Satyajeet Kumar

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