What does acid strength describe?
The degree of ionisation of an acid in water, not the amount of acid present.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.4.2.5
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What does acid strength describe?
The degree of ionisation of an acid in water, not the amount of acid present.
How do strong and weak acids differ in their ionisation in water?
A strong acid ionises completely; a weak acid ionises only partially.
What are three typical strong acids?
Hydrochloric acid, nitric acid and sulfuric acid.
What are three typical weak acids?
Ethanoic acid, citric acid and carbonic acid.
For two acidic solutions of the same concentration, how does the stronger acid compare in hydrogen ion production and pH?
It produces more hydrogen ions and has a lower pH.
What does acid strength describe, and how do strong and weak acids differ?
Strength describes the degree of ionisation in water: strong acids ionise completely; weak acids ionise partially.
What does acid concentration describe, and how do concentrated and dilute solutions differ?
Concentration describes the amount of acid dissolved in a given amount of solution. A concentrated solution contains more dissolved acid per volume than a dilute solution.
Can a strong acid be dilute and a weak acid concentrated?
Yes. Acid strength and concentration are independent properties.
How do pH and hydrogen ion concentration change as a solution becomes more acidic?
The pH decreases and the hydrogen ion concentration increases.
What does it mean for a solution to be neutral?
It is neither acidic nor alkaline.
How does hydrogen ion concentration change when pH decreases by 1?
It increases by a factor of 10.