Chemical Bonding — Chemistry STD 10 — Question

What is the difference between :
Ionic compounds and covalent compounds

Look at the following reaction :
A. Nitrogen + metal → compound X
B. X + water → ammonia + another compound
C. Ammonia + metal oxide → metal + water + N2
(i) One metal that can be used for reaction in A is magnesium.
(a) Write the formula of the compound X, that is formed.
(b) Write the balanced equation for reaction B, where Xis the compound formed.
( c) Which property of ammonia is demonstrated by reaction C?

What volume of hydrogen and oxygen measured at S.T.P. will be required to prepare 1.8 g of water?

How is an acid prepared from a non metal and a base from a metal? Give equation.

What is the formula for liquid ammonia? Account for the basic nature of this compound.

By drawing an electron dot diagram show the formation of Ammonium ion [Atomic No.: N = 7 and H = 1]

Define the following terms giving one example in each case (i) An acid (ii) A base (iii) An acid salt.

Write the equations of the reactions which take place at the cathode and anode when acidified water is electrolyzed.

The sketch below illustrates the refin ing of aluminium by Hoopes process

(a) Which of A and B is th e cathode and which one is the anode?
(b) What is the electroly te in the tank?
( c) What material is used for th e cathode?

Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction
Write three balanced equation for the purification of bauxite ?