Surface Chemistry

At a given temperature, 0.45 g of acetic acid in 50 mL of water is shaken with 1.0 g of charcoal and the pH of the resulting solution is 3.0 . Assume, the adsorption of acetic acid from the aqueous solution by charcoal follows Freundlich is...

Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from $10 \mathrm{mg} \mathrm{g}^{-1}$ and $16 \mathrm{mg} \mathrm{g}^{-1}$ aqueous phenol solutions, the concentrations of adsor...

To form a complete monolayer of acetic acid on $1 \mathrm{~g}$ of charcoal, $100 \mathrm{~mL}$ of $0.5 \mathrm{M}$ acetic acid was used. Some of the acetic acid remained unadsorbed. To neutralize the unadsorbed acetic acid, 40 $\mathrm{mL}$...

Consider the following statements related to colloids.
(I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium.
(II) For emulsions, both the dispersed phase and the dispersion medium are liquid.
(III)...

The correct option(s) related to adsorption processes is(are)

The correct statement(s) related to colloids is (are)

The correct statement(s) about surface properties is (are)

When O2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O2. The true statement(s) regarding this adsorption is(are)

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25oC. For this process, the
correct statement is

The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is...

Choose the correct reason for the stability of the Iyophobic colloidal particles

The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)

Among the electrolytes Na\(_2\)SO\(_4\), CaCl\(_2\), Al\(_2\)(SO\(_4\))\(_3\) and NH\(_4\)Cl, the most effective coagulating agent for Sb\(_2\)S\(_3\) sol is

Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is:

Statement 1 : Micelles are formed by surfactant molecules above the critical micellar concentration (CMC).

Statement 2 : The conductivity of a solution having surfactant molecules decreases sharply at the CMC.

Nitrogen gas is absorbed on 20% surface sites. On heating N\(_2\) gas evolved from sites and was collected at 0.01 atm and 298 K in a container of volume 2.46 cm\(^3\). Find out the number of surface sites occupied per molecule of N, if the...

1 gm of charcoal adsorbs 100 ml 0.5 M CH3COOH to form a monolayer, and thereby the molarity of CH3COOH reduces to 0.49. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal = 3.01 $$\...