Tag: chemical changes

The process of formation of polymers from respective monomers is called:

An aqueous solution of volume 500 ml, when the reaction : $ 2Ag^+(aq) +Cu(s) \leftrightharpoons Cu^{2+}(aq) +2Ag(s) $ reached equilibrium, the concentration of $ Cu^{2+} $ ions was xM. to this solution, 500 ml of water is added.at new equilibrium , the concentration of $ Cu^{2+} $ ions would be 

When an electric current is passed through an aqueous solution of the following, the concentrations of cation as well as anion will not change for (assume constant volume of the electrolytic solution)

$NaCl$ is doped with $2\times { 10 }^{ -3 }$ mole % $Sr{Cl} _{2}$, the concentration of cation vacancies is

Electrolysis of a solution of $ MnSO _{4}$ in aqueous sulphuric acid is a method for the preparation of $ MnO _{2}$ as per the reaction: $ Mn^{2+}(aq)+2H _{2}O\rightarrow MnO _{2}(s)+2H^{+}(aq)+H _{2}(g).$ Passing a current of 19.3 A for 2 h gives only 52.2 g of $MNO _{2}.$ The current efficiency is (Mn = 55)

Caesium chloride, on heating, changes into

A big irregular shaped vessel contained water, conductivity of which was $ 2.56 \times 10^{-3}\, S^{-1} \, m^{-1}.$ 585 g of NaCI was then added to the water and conductivity after the addition of Nacl, was found to be $ 3.06 \times 10^{-3}\,S^{-1}\, m^{-1}. $ The molar conductivity of Nacl at this concentration is $ 1.5 \times 10^{-2}\, S^{-1}\, mol^{-1}.$The capacity of vessel if it is fulfilled with water, is

The electrolysis of which electrolyte gives the same products in the fused state as well as in the aqueous solution state?

If mercury is used as cathode in the electrolysis of aqueous NaCl solution, the ions discharged at cathode are:

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out: