The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of KCl, and at room temperature. The correct assignment of the sketches is -
The qualitative sketches I, II and III given below show the variation of surface tension with molar…
Solution
In case III, hydrophobic interaction is stronger than case II causing surface tension to decrease more rapidly.
Due to (inorganic electrolyte) intermolecular forces increases, surface tension increases.
Asked in: JEE Advanced 2016 (Paper 2)