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Preparation of Carboxylic Acids

Alkaline hydr...

Question

Alkaline hydrolysis of 1,1,1-trichloro derivative (A) of an alkane gives a molecule (B) which produces red coloration with aqueous ${F e C l}_{3}$ . The compound (A) is ?

{C H}_{3} {C H}_{2} {C C l}_{3}

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{C H}_{3} {C C l}_{3}

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C H {C l}_{3}

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None of these

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Solution

The correct option is B ${C H}_{3} {C C l}_{3}$
Alkaline hydrolysis of a trichloro derivative will give a carboxylic acid. The carboxylic acid that gives red colouration with aqueous $F e C l_{3}$ is acetic acid $C H_{3} C O O H$ . Hence, the compound A is $C H_{3} C C l_{3}$ .

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Similar questions

⊖ C H_{2} - C H_{3}

⊖ C H_{3}

⊖ C F_{3}

⊖ C H (C H_{3})_{2}

⊖ C C l_{3}

⊖ C H_{2} - C C l_{3}

⊖ C H_{2} - C H_{2} - C H_{3}

⊖ C H_{2} - \oplus N (C H_{3})_{3}

⊖ C (C H_{3})_{3}

⊖ C H_{2} - C D_{3}

An alkane with molecular formula $C_{6} H_{14}$ gives two monochloro alkanes on chlorination. What is the structure of alkane?

C H_{3} - C H | C H_{3} - C H_{2} - C H | C H_{3} - C H | C H_{3} - C H_{3}

C H_{3} - C H | C H_{3} - C H | C H_{3} - C H_{3}

I U P A C

The correct order of stability of the following carbanions is:

$(C H_{3})_{3} C^{-},^{-} C C l_{3}, (C H_{3})_{2} C H^{-}, C_{6} H_{5} - C H_{2}^{-}$

C H_{3} - C H_{2} - C H_{3} | C H - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{3} | C H - C H_{3}

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