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Senior High School · WASSCE style

Chemistry

Question 1

1For an exothermic reaction, raising the temperature shifts equilibrium

Hard
Question 2

2In the Haber process, the catalyst is

Easy
Question 3

3An endothermic reaction has a ΔH that is

Hard
Question 4

4Using bond energies C–H 413, O=O 498, C=O 805, O–H 464 kJ/mol, ΔH for CH₄ + 2O₂ → CO₂ + 2H₂O is about

Hard
Question 5

5According to Le Chatelier's principle, increasing the pressure on N₂ + 3H₂ ⇌ 2NH₃ will

Medium
Question 6

6For 2SO₂ + O₂ ⇌ 2SO₃ (ΔH negative), the yield of SO₃ is increased by

Hard
Question 7

7For N2 + 3H2 ⇌ 2NH3, increasing the pressure shifts the equilibrium to the

Medium
Question 8

8The energy profile of an exothermic reaction shows products

Easy
Question 9

9An endothermic reaction

Easy
Question 10

10For N₂ + 3H₂ ⇌ 2NH₃ (exothermic), yield of ammonia increases with

Hard

Demo questions written by Otisam in the style of the WASSCE. They are not WAEC past questions.