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Senior High School · WASSCE style

Chemistry

Question 1

1Methyl orange in acid is

Easy
Question 2

220.0 cm³ of 0.10 mol/dm³ HCl neutralises 25.0 cm³ of NaOH solution. What is the concentration of the NaOH?

Medium
Question 3

325.0 cm³ of Na₂CO₃ solution needs 20.0 cm³ of 0.1 mol/dm³ HCl for complete reaction. The concentration of Na₂CO₃ is

Hard
Question 4

420.0 cm³ of 0.05 mol/dm³ H₂SO₄ neutralises x cm³ of 0.10 mol/dm³ NaOH. Find x.

Hard
Question 5

525 cm³ of 0.1 mol/dm³ NaOH is neutralised by 0.1 mol/dm³ HCl. The volume of acid needed is

Easy
Question 6

6Phenolphthalein in alkaline solution is

Easy
Question 7

7Which indicator suits a titration of a strong acid with a weak base?

Medium
Question 8

8The point in a titration where exactly enough reagent has been added to react with the sample is the

Easy
Question 9

9Phenolphthalein is

Easy
Question 10

10Phenolphthalein is suitable for titrating a weak acid with a strong base because

Hard

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