Question

Identify the most soluble amine in water from the following amines having comparable molecular weight:

• A. Primary amine
• B. Secondary amine
• C. Tertiary amine
• D. None of these

Answer 1

The correct option is A Primary amine

The highest soluble amine would be primary amine, because it can form more H-bonds with water since $1^{\circ }$ amine$(-N{H}_2)$ has $2$ hydrogen atoms for H-bonding which decreases as we move on to secondary and then tertiary amine. Hence, the correct answer is option (a).