Question

Which temperature is related to micelle formation?

• A. Critical temperature
• B. Inversion temperature
• C. Reduced temperature
• D. Kraft temperature

Answer 1

The correct option is D Kraft temperature

a) Critical temperature ($T_c$) is a minimum temperature above which gas cannot be liquified, $T_c$ = $\frac{8a}{27Rb}$

b) Inversion temperature ($T_i$) is the temperature at which Joule - Thomson effect changes sign, $T_i=2\times T_b$

c) Reduced temperature ($\theta$)
$\theta$ = $\frac{T}{T_c}$

d) Kraft temperature ($T_k$)
The formation of micelles takes place only above a particular temperature called Kraft temperature.