Waec 2023 Chemistry Question 5

Practice essay / theory question 5 from the 2023 Waec Chemistry examination. This question covers General .

Waec 2023 Chemistry Essay / Theory

Topic: General

Question 5 WAEC • 2023 • CHEMISTRY • essay

Describe how iron and aluminium reacts with each of the following substances:

Question Parts

( a )

(i) dilute H₂SO₄; (ii) dilute HNO₃.

( b )

(i) Write an equation for the burning of sulphur in air. (ii) Name the catalyst used in the contact process. (iii) In the contact process, why is an excess of air used? (iv) Why is it necessary to cool the catalyst used in 5b(ii) (v) Give a reason why the air used in the contact process needs to be as clean as possible. (vi) State two reasons why SO₂ should not be discharged into the atmosphere.

( c )

(i) State the reagent and condition used in the laboratory preparation of chlorine. (ii) State two uses of chlorine.

( d )

(i) Name the drying agents for each of the following gases: I. hydrogen; II. sulphur (IV) oxide; III. ammonia. (ii) State the components of the following alloys: I. Bronze; II. Brass.

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About This Question

This is Waec 2023 Chemistry Question 5. It is one of the essay questions from the 2023 Waec Chemistry examination.

The question covers General .

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