electrical fouble layer
although individual hydrophobic colloids have an electrical charge a colloidal dispersion does not have a net electrical charge the diffuse layer in a collodial dispersion contains a quantity of counter ions sufficient to balance the electrical charge on the particle the charge distribution in the diffuse layer of a negatively charged colloid can be represented by the curve abcd in the figure the ions involved in this electroneutrality are arranged in such a way as to constitute what is called electrical double layer