Surface Chemistry

For Freudlich adsorption isotherm, a plot of log(x/m) ( y-axis) and log p (x-axis) gives a straight line. The intercept and slope for the line is 0.4771 and 2, respectively. The mass of gas adsorbed per gram of adsorbent if the initial pressure is 0.04 atm, is _____ * 10? g. (log 3 = 0.4771)

A sample of red ink (a colloidal suspension) is prepared by mixing eosine dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :

Match the following:

An ionic micelles is formed on the addition of: excess water to liquid

Tyndall effect is observed when

Amongst the following statements regarding adsorption, those that are valid are:
(a) ΔH becomes less negative as adsorption proceeds.
(b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas.
(c) On adsorption, the residual force acting along the surface of the adsorbent increases.
(d) With increase in temperature, the equilibrium concentration of adsorbate increases.

The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between log(x/m) and log p gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of x/m at a pressure of 4 atm is: [numerical value].
(Given log3 = 0.4771)

Which of the following is used for the preparation of colloids?

A spherical balloon of radius 3 cm containing helium gas has a pressure of 48 * 10?³ bar. At the same temperature, the pressure, of a spherical balloon of radius 12 cm containing the same amount of gas will be * 10? bar

Arrange the following solutions in the decreasing order of pOH
(1) 0.01M HCl
(2) 0.01M NaOH
(3) 0.01M CH₃COONa
(4) 0.01M NaCl