1. (a) Name: i. two acidic oxides ii. two amphoteric oxides and iii. two basic...

1. (a) Name:
i. two acidic oxides
ii. two amphoteric oxides and
iii. two basic oxides (3 marks)
(b) i. What is Ozone? (1 mark)
ii. Give two (2) important uses of Ozone (1 mark)
(c) i. Using equation only describe the laboratory preparation of chlorine. (2 marks)
ii. State the four (4) allotropes of sulphur.(2 marks)
iii. What is Activation Energy (Ea) ? (1 mark)

2(a) State the effect of pressure on these reaction;
(i) N2O4(g) 2NO2(g)
(ii) N2(g) + 3H2(g) 2NH3(g)
(iii) H2(g) + I2(g) 2HI(g) (3mks)
(b) Consider the following system at equilibrium; A2(g) + 3B2(g) 2AB3(g) ∆H=-
XKJ/mol
(i) Write an expression for the equilibrium constant Kc (1mk)
(ii) List three reaction conditions that are expected to favour the production of AB3 (1mk)
(c) Define the following (i) Electrolysis (ii) Electrode (2mks)
(d) Calculate the mass of silver deposited when a current of 2.6A is passed through a
solution of its salt for 70 minutes. (Ag=108, 1 faraday=96500C). (3mks)?

7 Answers Available
Asked by Aiyela korede on 30th April, 2020