Chemistry

Question 1

1What salt forms when sulphuric acid reacts with sodium hydroxide?

Easy

A. sodium nitrate B. sodium sulphate C. sodium chloride D. sodium sulphide

Question 2

2Ethanoic acid is a weak acid because it

Easy

A. is a solid B. ionises only partially in water C. has no hydrogen ions D. is a base

Question 3

3What is the pH of 0.01 mol/dm³ hydrochloric acid?

Medium

A. 1 B. 2 C. 12 D. 0.01

Question 4

4A Lewis acid is a substance that

Hard

A. accepts an electron pair B. accepts a proton C. donates an electron pair D. donates a proton

Question 5

5The salt formed when HCl reacts with NaOH is

Easy

A. sodium chloride B. sodium sulphate C. hydrogen chloride D. sodium hydroxide

Question 6

6The Brønsted–Lowry conjugate acid of NH₃ is

Hard

A. N₂ B. NH₄⁺ C. NH₂⁻ D. H₂O

Question 7

7An acid salt contains

Medium

A. no hydrogen B. replaceable hydrogen C. only hydroxide ions D. only oxygen

Question 8

8A strong acid is one that

Easy

A. does not react with metals B. ionises completely in water C. is very concentrated D. has a high pH

Question 9

9The conjugate base of HSO₄⁻ is

Hard

A. H⁺ B. H₂SO₄ C. SO₄²⁻ D. HSO₃⁻

Question 10

10According to Brønsted and Lowry, an acid is

Easy

A. an electron donor B. a proton acceptor C. a proton (H⁺) donor D. a hydroxide donor