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What is the [H+] of a solution with a pH of 6.6? Use a scientific calculator.

2.5 × 107

5.0 × 105

8.3 × 106

7.7 × 105

Respuesta :

Kalahira
pH is a logarithmic scale as seen below:

   pH = -log([H+])

   Please note the negative sign in front of the log function. As concentration of H+ ions increases, the pH will decrease. If pH = 6.6, then:

   pH = 6.6 = -log([H+])

   You can multiple both sides by -1. Then, to get rid of the log function, set both sides of the equation equal to 10^ as shown below:

   10^(-6.6) = [H+]

   10^(-6.6) = 2.511x10^-7,
CintiaSalazar

Considering the definition of pH, the concentration [H⁺] is 2.5 ×10⁻⁷ M.

Definition of pH

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

Concentration [H⁺] of the solution

In this case, being pH= 6.6, you can replace this value in the definition of pH:

6.6 = -log [H⁺]

Solving:

[H⁺]= 10⁻⁶ ⁶ M

[H⁺]= 2.5 ×10⁻⁷ M

Finally, the concentration [H⁺] is 2.5 ×10⁻⁷ M.

Learn more about pH:

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https://brainly.com/question/13557815

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