The electrolytic cell for alumina is given below.
`AI_2O_3` dissolved in molten cryolite is used as the electrolyte. What is the pu-rpose of adding cryolite to alumina?

What is the importance of adding cryolite in the electrolysis of alumina?

In the electrorefining of impure aluminium, molten AICI_3 is not used as electrolyte because : Its melting point is very high, pure aluminium formed dissolved into molten AlCl_(3) , it sublimes easily and is poor conductor due to covalent in nature, both 1 and 2

The figure depicts the electrolysis of mixture of alumina and cryolite. Label anode, cathode and electrolyte in the figure.

Write the reasons of followings: a) Aluminium is a very good reducing agent. b) Copper is a better conductor of electricity. But aluminium is widely used for making electric wires. c) Alumina is dissolved in molten cryolite at the time of electrolysis.

The major role of fluorspar (CaF_2) , which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na_3AIF_6) , is

The structural formula of two organic com-pounds are given below. CH_3-CH_2-CH_2-OH , CH_3-O-CH_2-CH_3 : Is their chemical properties the same? What is the reason?

The structural formula of two organic com-pounds are given below. CH_3-CH_2-CH_2-OH , CH_3-O-CH_2-CH_3 : What is the similarity between these two? What is the phenomenon known as?

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 ?

Extraction of aluminium be understood by : Electrolytic reduction Al_(2)O_(3) : Electrolyte : Al_2O_(3) + "Cryolite" + CaF_2 Carthode : Carbon inside the Fe container Anode : Graphite rods The molten electrolytes contain Na^+, Al^(3+), "and" Ca^(2+) but only Al gets deposited at cathode because,