coin problem ( with solution and problem)

Preparation of Colloidal Sols - For the preparation of lyophilic and lyophobic sols different methods are us..

Purification of Colloidal Sols - The colloidal solutions prepared by various methods usually contain electrolytes and other soluble substances as impurities. These impurities if not removed can destabilize the sols. Impurities are removed by the following methods: 1) D..

Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the dispersion mediu..

Heterogenous nature - Colloidal sols are biphasic in nature. It consists of the dispersed phase and the dispersion medium. In the colloidal solution, each particle is contained within its own surface boundary and therefore has a separate existence from the dispersion mediu..

Preparation of Lyophilic Sols Since lyophilic sols are quite stable, they can be easily prepared by shaking the lyophilic substance with the dispersion medium. Examples are: Colloidal sols of gum, starch, gelatine and egg albumi..

5. What is the mass of hydrogen peroxide present in 1 litre of a 2M solution? Calculate the volume of oxygen at STP liberated upon the complete decomposition of 100 cm 3 of the above solution..

2. Write an equation for the half reaction in which the magnesium metals is oxidized to magnesium ions, Mg 2 + in aqueous solution..

14. The solubility product of AgCl in water is 1.5 x 10 - 1 0 . Calculate its solubility in 0.01 M NaCl aqueous solution..

17. A 100 W, 220 V incandescent lamp is connected in series with an electrolytic cell containing copper sulphate solution. What weight of copper will be deposited by the current flowing for 5 hours? (At. mass of Cu = 63.54..

14. Commercially available concentrated hydrochloric acid contains 38% HCl by mass. (a) What is the molarity of this solution? The density is 1.19 g/mL. (b) What volume of concentrated HCl is required to make 1.00 L of 0.10 M HC..