Question

100 POINTSS! please help mee

The pH of an aqueous solution is 5.00. Which of the following is TRUE about the solution?
Question 9 options:

The molar concentration of H3O+ is less than the molar concentration of OH-.


The molar concentration of H3O+ is 1.0 × 105 M


This solution can neutralize a base.


The molar concentration of H3O+ is 1.0 × 10-9 M.

Answer 1

The molar concentration of H3O+ is less than the molar concentration of OH-.

Step-by-step explanation:

The correct option is:

The molar concentration of H3O+ is less than the molar concentration of OH-.

When the pH of an aqueous solution is 5.00, it means that the concentration of H3O+ ions is 10^(-5.00) M, which is less than the concentration of OH- ions in a neutral solution (which is 10^(-7) M). Therefore, the solution is acidic and has a higher concentration of OH- ions than H3O+ ions. Options 2 and 3 are incorrect because they do not reflect the pH value of the solution or the relative concentrations of H3O+ and OH- ions. Option 4 is also incorrect because it states that the molar concentration of H3O+ is 10^(-9) M, which is the concentration of H3O+ ions in a neutral solution, not an acidic solution with a pH of 5.00.