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Base Catalysed Hydrolysis of Esters

Write the rea...

Question

Write the reactions for the following conver-sions: a)3-methylbutanoic acid to isobutane b)2-butene to ethanal c)1,2-dibromoethane to acetylene

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Q. Acetylene (ethyne) is prepared in the laboratory when calcium carbide reacts with water. Write the chemical equations of the reactions for converting it to ethane.

Q. Find out to which type of chemical reaction the following changes belong (Substitution reaction, addition reaction, polymerization, thermal cracking)
(a) Methane

\to

Chloromethane
(b) Propene

\to

Polypropene
(c) Hexan

\to

Butene + ethane
(d) Ethane

\to

1,2, dichloroethane

(a) Write balanced equations

(i) when butane is burnt in oxygen
(ii) preparation of ethylene from ethyl alcohol.

(b)

(i)Convert ethane to acetic acid
(ii)Convert acetylene to ethane
(iii)Convert acetic acid to ethyl alcohol
(iv)Convert acetic acid to ethyl acetate.

Q. Choose the correct word/phrase from within the brackets to complete the following sentences:
(i) The catalyst used for conversion of ethene to ethane is commonly __________ (nickel/iron/cobalt).
(ii) When acetaldehyde is oxidized with acidified potassium dichromate, it forms _________ (ester/ethanol/acetic acid).
(iii) Ethanoic acid reacts with ethanol in presence of concentrated H₂SO₄, so as to form a compound and water. The chemical reaction which takes place is called __________ (dehydration/hydrogenation/esterification).
(iv) Write the equation for the reaction taking place between 1, 2-dibromoethane and alcoholic potassium hydroxide.
(v) The product formed when ethene gas reacts with water in the presence of sulphuric acid is ________ (ethanal/ethanol/ethanoic acid).

Q. Which of the following reactions is used to prepare isobutane?

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Base Catalysed Hydrolysis of Esters

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