An aqueous solution at 25°c has a poh of 7.87 . calculate the ph. be sure your answer has the correct number of significant digits.

Respuesta :

Answer is: an aqueous solution at 25°C has a pH of 6,13.
pOH(solution) = 7,87
pH + pOH = 14.
pOH(solution) = 14 - 7,87
pOH(solution) = 6,13.
pH is the negative of the logarithm of the H3O⁺ ion concentration.
pOH is the negative of the logarithm of the OH⁻ ion concentration.

pH is the scale used to determine the acidity or alkalinity of the substance. For the given aqueous solution at a temperature 25-degree Celcius, the pH is equal to 6.13.

The pH scale ranges from 0-14, in which 7 is the neutral mid-point. The range between 0 to 7 is acid, and 7 to 14 is basic. From the pH and pOH scale it can be expressed as:

  • pH is the negative logarithm of hydrogen ions.
  • pOH is the negative logarithm of hydroxide ions.

The sum of pH + pOH = 14.

Given that, pOH = 7.87

Then,

pH + pOH =`14

pH + 7.87 = 14

pH = 14 - 7.87

pH = 6.13

Thus, the pH of the aqueous solution is 6.13, which is slightly acidic.

To know more about pH and pOH, refer to the following link:

https://brainly.com/question/18565633