The qualitative sketches I,II,and III given b | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The correct option is $D$ $(I: CH_3OH, II: KCl, III: CH_3(CH_2)_{11}OSO_3^{-}Na^{+})$.$1$. $CH_3OH$ is a solute that decreases the surface tension

Vedclass · Accepted Answer

$I : CH_3OH, II : KCl, III : CH_3(CH_2)_{11}OSO_3^{-}Na^{+}$

Vedclass · Answer

(D) The correct option is $D$ $(I: CH_3OH, II: KCl, III: CH_3(CH_2)_{11}OSO_3^{-}Na^{+})$.$1$. $CH_3OH$ is a solute that decreases the surface tension of water as it disrupts the hydrogen bonding network of water,leading to a gradual decrease in surface tension with increasing concentration (Sketch $I$).$2$. $KCl$ is an inorganic electrolyte. When added to water,it increases the intermolecular forces of attraction,leading to a slight increase in surface tension with increasing concentration (Sketch $II$).$3$. $CH_3(CH_2)_{11}OSO_3^{-}Na^{+}$ is a surfactant (soap/detergent). It significantly lowers the surface tension of water until the critical micelle concentration $(CMC)$ is reached,after which the surface tension remains nearly constant or increases slightly (Sketch $III$).

The qualitative sketches $I$,$II$,and $III$ given below show the variation of surface tension with molar concentration of three different aqueous solutions of $KCl$,$CH_3OH$,and $CH_3(CH_2)_{11}OSO_3^{-}Na^{+}$ at room temperature. The correct assignment of the sketches is

Similar Questions

In Bredig's arc method,some alkali is added because:

Some substances behave as electrolytes in dilute solutions and as colloids in their concentrated solutions. Their colloidal forms are said to form

Which of the following is a lyophilic colloid?

The process of peptization is ......

Explain the following terms:
$(i)$ Electrophoresis
$(ii)$ Coagulation
$(iii)$ Dialysis
$(iv)$ Tyndall effect.

Vedclass Test Series

Exam Paper Generator

Online Exam Module