Single Choice

On heating with bleaching powder, ethyl alcohol is converted into:

A$$CH_{3}COOH$$
B$$CH_{3}CHO$$
C$$CH_{3}COCH_{3}$$
D$$CHCl_{3}$$
Correct Answer

Solution

Bleaching powder reacts with water giving chlorine and calcium hydroxide as: $$CaOCl_{2} + H_{2}O \rightarrow Ca(OH)_{2} + Cl_{2}$$

Firstly oxidation of ethyl alcohol to give acetaldehyde takes place as:
$$C_{2}H_{5}OH + H_{2}O \rightarrow CH_{3}CHO + 2HCl$$

Chlorination of the acetaldehyde formed takes place to form chloral (trichloroethanal):
$$CH_{3}CHO + 3Cl_{2} \rightarrow CCl_{3}CHO + 3HCl$$

Chloral thus formed is hydrolysed by $$Ca(OH)_{2}$$ to give chloroform.
$$2CCl_{3}CHO + Ca(OH)_{2} \rightarrow 2CHCl_{3} + (HCOO)_{2}Ca$$

SIMILAR QUESTIONS

Haloalkanes and Haloarenes

The best method to prepare neopentyl chloride is:

Haloalkanes and Haloarenes

Write the structure of the major organic product in each of the following reactions: $$CH_3CH_2CH_2OH+SOCl_2 \rightarrow $$

Haloalkanes and Haloarenes

In the following reaction sequence: $$\underset{(C_3H_6Cl_2)}{I} \xrightarrow {KOH(aq)} II \xrightarrow[(ii)H_2O/H^+]{(i)CH_3MgBr} III \xrightarrow{Anhy.ZnCl_2+Con.HCl} $$ give trubidity immediately

Haloalkanes and Haloarenes

Which of the following reaction(s) can be used for the preparation of alkyl halides? (I) $$CH_3CH_2OH+HCl\xrightarrow {anh.ZnCl_2}$$ (II) $$CH_3CH_2OH+HCl\rightarrow$$ (III) $$(CH_3)_3COH+HCl\rightarrow$$ (IV) $$(CH_3)_2CHOH+HCl\xrightarrow {anh.ZnCl_2}$$

Haloalkanes and Haloarenes

Which statement is correct?

Haloalkanes and Haloarenes

Suggest the reagent that could be used to prepare these alkyl halides from alcohols.

Haloalkanes and Haloarenes

The product $$(B)$$ is:

Haloalkanes and Haloarenes

The number of possible monobromo products is (excluding stereoisomers):

Contact Details