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Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds3 Marks
Question
Write the name and the structural formula of the compound formed when ethanol is heated at 443 K with excess of conc. $\text{H}_{2}\text{SO}_{4}$ State the role of conc. $\text{H}_{2}\text{SO}_{4}$ in this reaction. Write chemical equation for the reaction.
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Answer

$\DeclareMathOperator*{\median}{{\text{C}_{2}\text{H}_{5}\text{OH}}} \median_{\text{Ethanol}}\xrightarrow[\text{443k}]{\text{Conc.H}_{2}\text{SO}_{4}}\text{CH}_{2}=\DeclareMathOperator*{\median}{{\text{CH}_{2}}} \median_{\text{Ethane}}+\text{H}_{2}\text{O}$The product formed is:

$\text{H}_{2}\text{SO}_{4}$ is a dehydrating agent. So, ethanol undergoes dehydration i.e., loses a water molecule to form ethane.

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