Question

The soap molecule has a

• A. hydrophilic head and a hydrophobic tail
• B. hydrophobic head and a hydrophilic tail
• C. hydrophobic head and a hydrophobic tail
• D. hydrophilic head and a hydrophilic tail

Answer 1

The correct option is A

hydrophilic head and a hydrophobic tail

Explanation of the correct answer:

The correct answer is option A:

1. A sodium or potassium salt of a long-chain carboxylic acid makes up a soap molecule.
2. A lengthy hydrocarbon tail and a negatively charged head make up its two main parts.
3. The polar end is hydrophilic in nature and soluble in water, in contrast to the hydrocarbon tail, which is hydrophobic and repels water because a micelle has captured the hydrophobic tail oil and grease.
4. The micelle's external surface is created by the hydrophobic head.
5. As a result, water can readily clean micelle.

Explanation of the incorrect answers:

Options B, C, and D:

1. The soap molecule has a hydrophilic head and a hydrophobic tail.
2. Hence, these options are incorrect.