Considering the definition of pH, the pH is the last option, 4.77.
In firts place, you need to know that pH is a numerical scale used to specify the acidity or alkalinity of a solution. The pH is related to hydrogen ions, since it indicates the amount of these ions present in a solution or substance.
Mathematically, pH is defined as the opposite of the base 10 logarithm or the negative logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions:
pH= -log [H⁺]
The pH scale varies from 0 to 14, being acidic solutions with a pH lower than 7 and basic those with a pH greater than 7, while the pH value 7 corresponds to neutral substances.
In this case, being [H+]=1.7×10⁻⁵ M, you can replace this value in the definition of pH:
pH= -log (1.7×10⁻⁵ M)
Solving:
pH=4.77
Then, the pH is 4.77.
Learn more: brainly.com/question/3992824?referrer=searchResults
