At constant temperature, perform adsorption of solute D in V (mL) of solution (solution The medium is H2O) on m (g) of solid Q to obtain solution concentration data when equilibrium is reached.

amount of D adsorbed (in the table below).

a. Is this adsorption monolayer or multilayer? Explain.

b. Let's show the application of the above process in practice. What are the requirements for solid Q to meet?

suitable for that application? Name and properties of some popular solid materials

use.

c. Assuming the adsorption process follows the Langmuir isotherm adsorption equation, determine

equation constants.

d. If after adsorption the solution has a concentration of C, what is the initial concentration of Co of the solution?

how much? Calculate the adsorption efficiency.

e. Compared with question d, if the initial concentration of Co is kept constant and the temperature changes according to the value of T, then

Will the C concentration increase or decrease? Explain.