Strong & Weak Acids (Edexcel GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What ions do acids release when they dissociate in water?
What ions do acids release when they dissociate in water?
Hydrogen ions (H⁺) and anions
What determines whether an acid is classified as strong or weak?
What determines whether an acid is classified as strong or weak?
The extent of dissociation
How do strong acids dissociate in water?
How do strong acids dissociate in water?
They completely dissociate
Which of these is an example of a strong acid?
Which of these is an example of a strong acid?
Hydrochloric acid (HCl)
How do weak acids dissociate in water?
How do weak acids dissociate in water?
They only partially dissociate
What type of process is the dissociation of weak acids?
What type of process is the dissociation of weak acids?
Reversible with equilibrium
Which direction does the equilibrium lie for weak acids?
Which direction does the equilibrium lie for weak acids?
Far to the left
Which acid is given as an example of a weak acid?
Which acid is given as an example of a weak acid?
Ethanoic acid (CH₃COOH)
How does the pH of a weak acid compare to a strong acid of equal concentration?
How does the pH of a weak acid compare to a strong acid of equal concentration?
Weak acid has higher pH
What happens to pH when H⁺ ion concentration increases?
What happens to pH when H⁺ ion concentration increases?
pH decreases
By how many units does pH decrease when H⁺ concentration increases tenfold?
By how many units does pH decrease when H⁺ concentration increases tenfold?
1 unit
If pH increases from 1 to 3, by what factor does H⁺ concentration decrease?
If pH increases from 1 to 3, by what factor does H⁺ concentration decrease?
100