The number of statement/s which are the characteristics of physisorption is __________

A. It is highly specific in nature

B. Enthalpy of adsorption is high

C. It decreases with increase in temperature

D. It results into unimolecular layer

E. No activation energy is needed

Among the following the number of curves not in accordance with Freundlich adsorption isotherm is ________.

(a)

(b)

(c)

(d)

100 mL of 0.3 M acetic acid is shaken with 0.8 g of wood charcoal. The final concentration of acetic acid in the solution after adsorption is 0.125 M. The mass of acetic acid adsorbed per gram of carbon is _____________ $$\times$$ 10^$$-$$4 g.

(Given : Molar mass of acetic acid = 60 g mol^$$-$$1)

If the initial pressure of a gas is 0.03 atm, the mass of the gas adsorbed per gram of the adsorbent is ___________ $$\times$$ 10^$$-$$2 g.