S.I.F. Study is fun

                                 R  Rainbow Colour Reaction  Here Is the List of the reactions that are used to form rainbow colour in chemistry.That are Easily available in a School chemistry lab.                                                     For Violet Colour - Use Potassium Permanganate And Cold Water                          4KMnO4+ 2H2O → 4MnO2 + 3O2 + 4KOH For Prussian Blue - Use Potassium Hexacyanoferrate and FeCl3                    3K4[Fe(CN)6] + 4FeCl3 →  12KCl + Fe4[Fe(CN)6]3 For Pink Colour - Use Potassium Permanganate and Hot water                                 ( KMnO4 + Water is heated till gets Pink)                           4KMnO4+ 2H2O → 4MnO2 + 3O2 + 4KOH For Green Colour - Use Iron Salt and Sulphuric Acid And Water                       Fe2+ + H2SO4 + xH2O → FeSO4 + H2O + 2H+ For Yellow Color - Use K2CrO5                             Dissolve in water For Orange Color - Use K2Cr2O7                              Dissolve in Water For  Red c

Our objective is to prepare: Lyophilic Sols of Starch Gum Egg albumin Lyophobic Sols of Ferric hydroxide [Fe(OH) 3 ] Aluminium hydroxide [Al(OH) 3 ] Arsenious sulphide [As 2 S 3 ] The Theory What is Surface Chemistry? Surface chemistry is a branch of chemistry that deals with the study of the nature of surfaces, and physical and chemical reactions occur at the interface of two phases. It is closely related to colloid science. The foundation of colloidal chemistry was laid down by Thomas Graham, a Scottish scientist. What are Colloids? Colloids are the dissolved state of substances that either do not pass, or pass very slowly through a parchment paper or animal membrane. A few examples of colloids are starch, glue and  gelatin. A colloid is not a substance, but it depicts a particular state of a substance that depends upon the size of its particles. The size of a particle in a colloidal system is  between 1-100 nm. A colloidal system is a two phase heteroge