Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
At 25ºC, the molar concentration of hydronium ions (H₃O⁺) in an acidic solution is:
- less than 10⁻⁷
- more than 10⁻⁷
- equal to 10⁻⁷
- equal to 10⁻¹⁴
Show answer
Correct answer: B. more than 10⁻⁷
Why
An acidic solution at 25°C has [H₃O⁺] greater than 10⁻⁷ M (pH below 7, the neutral value where [H₃O⁺] = 10⁻⁷).