Question

In general, Kraft point phenomenon is generally not exhibited by which of the following surfactant?

• A. Tweens
• B. Sodium lauryl sulphate
• C. Calcium oleate
• D. Sodium stearate

Hint:

Remember: Kraft point is mainly associated with ionic surfactants; nonionic ones like Tweens usually don’t show this phenomenon.

Answer 1

The Correct Option is A

Kraft point is the temperature at which the solubility of a surfactant sharply increases due to micelle formation. Nonionic surfactants like Tweens typically do not exhibit a Kraft point, unlike ionic surfactants such as sodium lauryl sulphate.