The expression for ostwald dilution law is

The dissociation of weak electrolyte (weak acid) is expressed in terms of Ostwald dilution law. Stronger is the acid, weaker is its conjugate base. The dissociation constants of an acid (K_(a)) and its conjugate base (K_(b)) are related by the given relation : K_(w) = K_(a) xx K_(b) At 25^(@)C, K_(w) (Ionic product of water ) = 10^(14) . Phosphoric acid is a weak acid. it is used in fertilizer, food, detergent and toothpaste. Structure of phosphoric acid is : (pK_(a1) = 2.12, pK_(2) = 7.21 , pK_(a3) = 12.32) Aqueous solution of phosphoric acid with a density of 1 g mL^(-1) containing 0.05% by weight of phosphoric acid is used to impart taste to many soft drinks. Phosphate ion is an interfering radical in qualitative analysis. It should be removed for analysis beyond third group of qualitative analysis. Which among the following relations is correct ?

The decomposition of NH_3 on the surface of metal like platinum is a zero order reaction. Write the expression for the rate law of this reaction.

Obtain an expression for force using Newtons law.

Biot - Savart.s law relates current with the magnetic field produced by it.Write the mathematical expression of the above law in vector form.

Using this law, derive an expression for electric field due to thin uniformly charged shell.

Give the mathematical expression of avogadro's law.

Some apparatus and chemicals are given. Zn, Mg, dilute HCl, CaCO_3 test tube, water. Write the expression for the rate of the reaction.

A famous law in physics is expressed as ointbarB.bar(dl)=mu_0I Using the above get an expression for the intensity of magnetic field at a point due to an infinite current carrying wire.