Q177
Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which
A.
A homogeneous solution (say of phenol water) is formed
AnswerB.
Mutual solubility of the two liquids shows a decreasing trend
C.
Two liquids are completely separated into two layers
D.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
Critical solution temperature is that temperature at which the complete miscibility or a homogeneous mixture is formed. Sometimes the temperature has to be raised from the existing temperature or sometimes it should be decreased from the existing temperature to reach this critical solution temperature.