Q: The concentration of hydrogen ions in a solution is called?


Read this paragraph and choose the correct option from the provided answers:

The strength of acids and bases is determined by the concentration of ions they produce when dissolved in water. The concentration of hydrogen ions in a solution is called acidity. It is measured by pH. A neutral substance has a pH of 7. An acid has a pH lower than 7, and a base has a pH greater than 7.

 Choices:

- alkalinity

- alcohol

- moisture

- acidity


A:
acidity