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Carboxylic Acids

What happens ...

Question

What happens when (write chemical equation in each case)
(1) ethanol is burnt in air?
(2) ethanol is heated with excess $c o n c . H_{2} S O_{4}$ at $443 K$ ?
(3) a piece of sodium is dropped into ethanol?

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Solution

1. $C_{2} H_{5} O H + O_{2} \to C O_{2} + H_{2} O + h e a t + l i g h t$

Carbon dioxide and water is formed along with the release of heat and light.

2. $C_{2} H_{5} O H 443 K - --- \to H_{2} S O_{4} C H_{2} = C H_{2} + H_{2} O$

Here sulphuric acid acts as a dehydrating agent. It removes water from ethanol.

3. $C_{2} H_{5} O H + 2 N a \to 2 C_{2} H_{5} O N a + H_{2}$

Sodium ethoxide is formed along with the release of hydrogen gas.

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Similar questions

Q. What happens when a small piece of sodium is dropped into ethanol?

Q. Write the structural formula of ethanol. What happens when it is heated with excess of conc.

H_{2} S O_{4}

at 443 K? Write the chemical equation for the reaction stating the role of conc.

H_{2} S O_{4}

in this reaction.

Q. Question 39
Ethene is formed when ethanol at 443k is heated with an excess of concentrated sulphuric acid. What is the role of sulphuric acid in this reaction? Write the balanced chemical equation for this reaction.

Q. Write the name and the structural formula of the compound formed when ethanol is heated at 443 K with excess of conc.

H_{2} S O_{4}

. State the role of conc.

H_{2} S O_{4}

in this reaction. Write chemical equation for the reaction.

Q. What happens when the sodium metal is dropped in the ethanol?

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