The correct answer is: d) all of the above.
When we talk about pH, we’re referring to a scale that measures how acidic or basic a solution is. A lower pH value indicates a higher concentration of hydrogen ions in the solution, which in turn means that the solution is more acidic. So, all the statements are true. To break it down:
- a) the greater the number of hydrogen ions released: A low pH means there are more hydrogen ions present.
- b) the more acidic the solution: More hydrogen ions equate to higher acidity, hence the solution being more acidic.
- c) the lower the number on the pH scale: A low pH value directly reflects a lower number on the pH scale.
Thus, all of the options listed in the question are correct.