Phenol dissolved into sodium hydroxide solution to give another solution A.
What would be formed when A reacted with phenylamine/nitrous acid mixture , butylamine/nitrous acid mixture and ammonia/ nitrous acid respectively ?
The resulting solution were brown , red and colorless respectively .
To understand what would be formed when solution A reacts with different mixtures, we need to consider the reactions taking place. Let's break it down step by step.
1. Phenol reacts with sodium hydroxide (NaOH) to form a sodium phenoxide solution. This reaction is an acid-base reaction, where phenol acts as a weak acid and NaOH acts as a strong base. The equation for this reaction is:
Phenol + NaOH ⟶ Sodium Phenoxide + H2O
Now, let's see how solution A reacts with different mixtures:
a) Phenylamine/Nitrous acid mixture:
When solution A reacts with a mixture of phenylamine (also known as aniline) and nitrous acid (HNO2), it undergoes a diazonium reaction. The nitrous acid reacts with the sodium phenoxide to form a diazonium salt. This reaction is known as the Sandmeyer reaction. The resulting solution is brown due to the formation of a colored product. The equation for this reaction is:
Sodium Phenoxide + Nitrous Acid ⟶ Diazonium Salt + Water
b) Butylamine/Nitrous acid mixture:
When solution A reacts with a mixture of butylamine and nitrous acid, it also undergoes a diazonium reaction similar to the previous case. The nitrous acid reacts with the sodium phenoxide to form a diazonium salt. However, the product formed in this case is red, which indicates the formation of a different colored compound. The equation for this reaction is the same:
Sodium Phenoxide + Nitrous Acid ⟶ Diazonium Salt + Water
c) Ammonia/Nitrous acid mixture:
When solution A reacts with a mixture of ammonia (NH3) and nitrous acid, it undergoes a different reaction known as the Schiemann reaction. In this reaction, the nitrous acid reacts with the sodium phenoxide, but the resulting product is colorless. The equation for this reaction is:
Sodium Phenoxide + Nitrous Acid ⟶ Colorless Compound + Water
In summary:
- When A reacts with phenylamine/nitrous acid mixture, a brown colored diazonium salt is formed.
- When A reacts with butylamine/nitrous acid mixture, a red colored diazonium salt is formed.
- When A reacts with ammonia/nitrous acid mixture, a colorless compound is formed.
Please note that the actual specific diazonium salts or colorless compounds formed may vary depending on the exact reactants and reaction conditions used, but the general trends mentioned above should hold true.