Respuesta :
Answer: the sentence given by the question is false
Explanation:
The question requires us to determine if the sentence given ("If the concentration of H+ is greater than the concentration of OH- in a solution, the solution is basic") is true or false.
The acidity or alkalinity of a solution can be measured by the amount of H+ ions that are present, and it is numerically represented by the pH of a solution. The pH is calculated based on the concentration of H+ ions, as it follows:
[tex]pH=-log\lbrack H^+\rbrack[/tex]where [H+] corresponds to the concentration, in mol/L, of H+ ions in solution.
The equation above tells us that:
- a high concentration of H+ ions leads to a low pH value (acid solution);
- a low concentration of H+ ions leads to a high pH value (alkaline or basic solution).
A similar idea is applied to the value pOH (which corresponds to -log[OH-]), but a high pOH value indicates an alkaline solution, while a low pOH value corresponds to an acidic solution.
Thus, we can say that, if a solution presents more H+ ions than OH-, its pH value should be low while its pOH value should be high, which indicates an acid solution.
Therefore, the sentence given by the question is false.
