Which of the following are correct statements

1.	Which of the following are correct statements
Answer» Spontaneous adsorption of gases on solid surface is an exothermic process as ENTROPY decrease during adsorption FORMATION of micelles takes place when temperature is below Kraft Temperature `(T_k)` and concentration is above CRITICAL micelle concentration (CMC) A colloid of `Fe(OH)_3` is prepared by adding a little excess (required to completely precipitate `Fe^(3+)` ions as `Fe(OH)_3` ) of NaOH in `FeCl_3` solution the particles of this sol will move towards cathode during electrophoresis. According to Hardy-Schuize rules the coagulation (flocculating) value of `Fe^(3+)` ION will be more than `Ba^(2+)` or `Na^(+)` Solution :(A)`DeltaG=DeltaH-TDeltaSltO " " as " " DeltaSltO " " so DeltaH` has to be negative (B)micelles formation will take place above `T_k` and above CMC ( C)`Fe(OH)_3` sol prepared by the hydrolysis of `FeCl_3` solution adsorbs `Fe^(3+)` and this is positively charged. `FeCl_3 +3H_2O hArrFe(OH_3)+3HCl , " " Fe(OH)_3+FeCl_3 tounderset("Fixed part.")(Fe(OH)_3)\|Fe^(3+), " " underset("Diffused part.")(3Cl^(-))` Positive charge on colloidal sol is due to adsorption of `Fe^(3+)` ion (COMMON ion between `Fe(OH)_3` and `FeCl_3`) (D)`Fe^(3+)` ions will have greater flocculatibility power so smaller flocculating value.

Discussion