M2 C4

Question 1

What is an acid?

Answer 1

Compounds that release H* ions in aqueous solution

Common acids include: HCl, H2SO4, HNO3, and CH3COOH.

Question 2

Define alkali.

Answer 2

Water soluble bases that release OH ions into aqueous solution

Common alkalis include: NaOH, KOH, and NH4OH.

Question 3

What is a base?

Answer 3

A substance that can accept H* ions from another substance.

Question 4

What is neutralisation?

Answer 4

A reaction between H* and OH ions, forming water

This may involve an acid and a base to form a salt.

Question 5

What is a strong acid?

Answer 5

An acid that completely dissociates in solution.

Question 6

What is titration?

Answer 6

A technique used to determine the amount of one solution of a known concentration required to completely react with a known volume of another solution of unknown concentration.

Question 7

Fill in the blank: An alkali releases _______ ions into aqueous solution.

Answer 7

OH

Question 8

True or False: Neutralisation can only occur between a strong acid and a strong base.

Answer 8

False

Question 9

List examples of common acids.

Answer 9

• HCl
• H2SO4
• HNO3
• CH3COOH

Question 10

List examples of common alkalis.

Answer 10

• NaOH
• KOH
• NH4OH

Question 11

Weak acid

Answer 11

An acid that only partially dissociates in solution