Ethene is formed when ethanol at $443\, K$ is heated with excess of concentrated sulphuric acid. What is the role of sulphuric acid in this reaction? Write the balanced chemical equation of this reaction.
(N/A) In this reaction,concentrated sulphuric acid acts as a dehydrating agent,which removes a water molecule from the ethanol molecule.
The balanced chemical equation is:
$CH_3CH_2OH \xrightarrow[443\, K]{\text{Hot conc. } H_2SO_4} CH_2=CH_2 + H_2O$
The balanced chemical equation is:
$CH_3CH_2OH \xrightarrow[443\, K]{\text{Hot conc. } H_2SO_4} CH_2=CH_2 + H_2O$
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$(a)$ Complete the following equations:
$(i)$ $CH_4 + 2O_2 \longrightarrow CO_2 + 2H_2O + \text{Heat} + \text{Light}$
$(ii)$ $CH_3COOH + C_2H_5OH \xrightarrow{\text{Acid}} CH_3COOC_2H_5 + H_2O$
$(iii)$ $CH_3CH_2OH \xrightarrow[\text{443 K}]{\text{Conc. } H_2SO_4} CH_2=CH_2 + H_2O$
$(i)$ $CH_4 + 2O_2 \longrightarrow CO_2 + 2H_2O + \text{Heat} + \text{Light}$
$(ii)$ $CH_3COOH + C_2H_5OH \xrightarrow{\text{Acid}} CH_3COOC_2H_5 + H_2O$
$(iii)$ $CH_3CH_2OH \xrightarrow[\text{443 K}]{\text{Conc. } H_2SO_4} CH_2=CH_2 + H_2O$
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