(a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write an equation of the reaction involved.
(b) What happens when ethanol is heated with concentrated sulphuric acid at $170^{\circ} C$ ? Write the equation of the reaction which takes place.

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Solution

(a) when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid a sweet smelling ester called ethyl ethanoate is formed.

$C H_{3} - C O O H + C H_{3} - C H_{2} O H C o n c . H_{2} S O_{4} - ------- \to C H_{3} - C O O - C_{2} H_{5} + H_{2} O$

(b) when ethanol is heated with concentrated sulphuric acid at $170^{\circ} C$ It gets dehydrated to form ethene.

$C H_{3} - C H_{2} O H C o n c . H_{2} S O_{4} a t 170^{o} C - ------------ \to D e h y d r a t i o n C H_{2} = C H_{2} + H_{2} O$

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(a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write an equation of the reaction involved. (b) What happens when ethanol is heated with concentrated sulphuric acid at 170∘C? Write the equation of the reaction which takes place.