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Chemistry

Chemistry · Quick practice · answer shown after each question

Acid-base theories and strength

Question 1 of 10

Question 1 of 10

The conjugate base of HCl is

Question 2 of 10

Question 2 of 10

A base that dissolves in water is called an ___.

Question 3 of 10

Question 3 of 10

An amphoteric oxide reacts with

Question 4 of 10

Question 4 of 10

Sulphuric acid has a basicity of ___.

Question 5 of 10

Question 5 of 10

Every Brønsted–Lowry acid has a conjugate base.

Question 6 of 10

Question 6 of 10

Identify the conjugate acid–base pairs in each reaction: (a) HNO₃ + H₂O ⇌ H₃O⁺ + NO₃⁻, (b) NH₃ + H₂O ⇌ NH₄⁺ + OH⁻, (c) HCO₃⁻ + H₂O ⇌ H₂CO₃ + OH⁻.

Question 7 of 10

Question 7 of 10

The hydroxonium ion has the formula H₃O⁺.

Question 8 of 10

Question 8 of 10

Explain, with equations, what is meant by an amphoteric oxide, using zinc oxide as an example.

Question 9 of 10

Question 9 of 10

How many moles of NaOH are needed to neutralise 0.2 mol of carbonic acid completely?

Question 10 of 10

Question 10 of 10

What is the basicity of sulphuric acid, H₂SO₄?

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.