Question

When ethyl alcohol and $KI$ react in presence of $N{a_2}C{O_3}$ yellow crystals of .... are formed.
A) $CH{I_3}$
B) $C{H_3}I$
C) ${C_2}{H_3}{I_2}$
D) ${C_2}{H_5}I$

Answer 1

Hint: The given reagents $KI$ in presence of $N{a_2}C{O_3}$ are used in organic qualitative tests of methyl groups containing carbonyl compounds. It forms Idoform in this reaction.

Complete step-by-step answer:Iodoform reaction is a notable chemical reaction in organic chemistry. The Iodoform reaction is a type of chemical reaction that results in the formation of a compound known as iodoform. The reaction occurs when a molecule of iodine reacts with a molecule of methyl ketone. The result is the formation of a compound called iodoform.
Iodoform is a pale yellow solid that is soluble in water. It has a characteristic, pungent smell that is reminiscent of vinegar. Iodoform is used as a temporary sealant for dental cavities, and as a disinfectant. It is also used in the production of some plastics.
The Iodoform reaction is used in the laboratory to determine the presence of methyl ketone. The reaction is performed by adding a small amount of iodine to a solution of methyl ketone. If methyl ketone is present, the reaction will result in the formation of iodoform.
Iodoform reaction is used to synthesize iodoform, a chemical with a distinctive odor. Iodoform is used in organic synthesis, as a precursor to other chemicals, and as a radiocontrast agent.
The reaction that is happening is also an iodoform reaction.
The reaction is $KI + {C_2}{H_5}OH\xrightarrow{{N{a_2}C{O_3}}}CH{I_3}{\text{(Yellow)}}$.

Option ‘A’ is correct

Note: iodoform reaction is a notable chemical reaction in organic chemistry. In this reaction, an iodide ion (I−) combines with an Methyl group containing carbonyl compounds to form a molecule of iodoform. Iodoform is a yellow, crystalline solid with a characteristic distinctive odor.