Organic Chemistry — Chemistry STD 10 — Question

Convert hydrochloric acid to nascent chlorine.

State : Gay-Lussac's Law of combining volumes.

Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
(i) Identify the components of the electrolyte other than pure alumina and the role played by each.
(ii) Explain why powdered coke is sprinkled over the electrolytic mixture.

Write the equation for the following reactions which result in the formation of ammonia.
(i) A mixture of ammonium chloride and slaked lime is heated.
(ii) Aluminium nitride and water.

How is acetic acid prepared from ethanol?

Prove the Following :
2 X V.D. = Molecular mass.

Give one chemical property (not indicators) with a balanced equation in each case which are typical of (i) a dilute acid (ii) a dilute aqueous alkali.

In order to obtain 1 tonne of aluminium the following inputs are required. 4 tonnes of bauxite, 150 kg of sodium hydroxide and 600 kg of graphite. The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (III) oxide, Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite
♦ when bauxite is treated with sodium hydroxide solution, what happens to
(i) the aluminium oxide
(ii) the iron (III) oxide

Carbon can reduce lead oxide but not aluminium oxide ?