Question

In the reaction sequence C2H5Cl+KCN⟶C2H5OHX, the molecular formula of X is:

Answer 1

Answer:

The molecular formula of X is C₂H₅CN.

Explanation:

• When an alkyl halide is reacted with potassium cyanide, the products formed are alkyl cyanide and potassium halide.
• The reaction takes place in the presence of alcohol.
• The KCN molecule is broken down into K⁺ and CN⁻.
• The C₂H₅Cl is broken down to form Cl⁻ ion and CH₃-CH₂⁺ carbocation.
• The carbocation formed in unstable and combines with the CN⁻ molecule to form CH₃-CH₂-CN.
• The K⁺ and Cl⁻ ions combine to give KCl.
• Hence, the reaction of ethyl chloride with potassium cyanide in the presence of ethyl alcohol gives ethyl cyanide and potassium chloride.

• The reaction is as follows: CH₃-CH₂-Cl + KCN → CH₃-CH₂-CN + KCl

Therefore, the molecular formula of the product X is C₂H₅CN.

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Answer 2

The molecular formula of x, ethyl cyanide is $C_{2} H_{5} CN$

Explanation:

The process by which chloro ethane combines with hydrogen cyanide to produce a product is described. In the presence of ethanol, the reaction takes place. This reaction falls under the category of SN2, or nucleophilic substitution reaction

The leaving group is replaced by a nucleophile in a single action.

In this reaction, the chloride (Cl) leaving group is substituted by the cyanide (CN) product, which is also created with potassium chloride. Following is the response:

$C_{2} H_{5} Cl + KCN - > +C_{2} H_{5} CN + KCl$

The product formed is ethanenitrile or ethyl cyanide.

Final answer:

The molecular formula of x, ethyl cyanide is $C_{2} H_{5} CN$

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