Respuesta :
The pH of an aqueous solution with the hydronium ion concentration [H₃O+] of 2 × 10^-14 M is 13.699.
Further Explanation:
pH and pOH
- pH and pOH measures the acidity or alkalinity of a substance.
- pH is the measure hydrogen ion concentration in a substance while pOH measures the concentration of hydroxyl ions.
Acids and bases
Acids
- Acids are substances that react with bases to form salt and water as the only products.
- Acids have a pH less than 7, with strong acids having a pH range of 1-3 while weak acids have a pH range of 4-6.
- The pOH of acids on the other hand is greater than 7.
Bases
- Bases are substances that react with acids to form salt and water as the only product.
- Bases have a pH greater than 7, with strong bases having a pH range of 12-14 and weak bases having a pH range of 8-11.
- Bases have a pOH less than 7.
Calculation of pH and pOH
- pH is calculated as the negative logarithm of hydrogen ion concentration.
That is;
pH = -Log [H+]
- pOH on the other hand is calculated as the negative logarithm of hydroxyl ion concentration.
That is;
pOH =-Log[OH-]
- Additionally;
pH + pOH = 14
In the Question:
We are given [H₃O+] = 2 × 10^-14 M
But; pH = -Log[H+] =-Log [H₃o+]
Therefore;
pH = - log[2 × 10^-14 M]
= 13.699
Therefore; The pH of an aqueous solution with the hydronium ion concentration [H₃O+] of 2 × 10^-14 M is 13.699.
Keywords: Acids, bases, pH, pOH
Learn more about:
- pH :https://brainly.com/question/12200689
- pOH : https://brainly.com/question/12200689
- Example of a question on pH: https://brainly.com/question/12200689
- Example of a question on pOH: https://brainly.com/question/12200689
Level; High school
Subject: Chemistry
Topic: Acids and bases
Sub-topic; pH and pOH
Taking into account the definition of pH, the pH of the aqueous solution is 13.69.
- Definition of pH
You have to know that pH is a measure of the acidity or basicity of a solution and indicates the concentration of hydrogen [H⁺] ions or cations present in a given substance.
- pH scale
pH is measured on a scale of 0 to 14. On this scale, a pH value of 7 is neutral, which means that the substance or solution is neither acidic nor alkaline.
A pH value of less than 7 means that it is more acidic, and a pH value of more than 7 means that it is more alkaline.
- Mathematical expression for pH
Mathematically, pH is defined as the logarithm in base 10, changed sign, of the activity of hydrogen ions, that is, the concentration of H⁺:
pH= -log [H⁺]= -log [H₃O⁺]
- In this case
You know that [H₃O⁺]= 2×10⁻¹⁴ M. Replacing in the definition of pH:
pH= -log (2×10⁻¹⁴ M)
pH= 13.69
In summary, the pH of the aqueous solution is 13.69.
Learn more:
- brainly.com/question/3992824?referrer=searchResults
- https://brainly.com/question/12200689
