Calculating the pH of a Solution

Worksheet Description

The worksheet dives, head first, into the topic of pH and pOH, emphasizing calculations involving hydroxide (OH-) and hydrogen (H+) ion concentrations in various solutions. The primary goal of this worksheet is to teach learners how to deduce pH or pOH values from given ion concentrations, and vice versa.

This worksheet is designed to:

Strengthen understanding of the pH and pOH concepts.

Develop skills in calculating pH, pOH, and their associated ion concentrations.

Depending on the data provided, use the appropriate formula. For example, if the concentration of hydrogen ions is given, you can find the pH. If the pOH is provided, you can determine the pH using the relationship between pH and pOH.

Remember that understanding pH and pOH is essential in various fields, from environmental science to medicine. These values can dictate how certain chemical reactions proceed or how harmful a substance might be.

Concepts

pH – A logarithmic measure that indicates the acidity or basicity of a solution based on the concentration of hydrogen ions ([H+]). The pH scale ranges from 0 (very acidic) to 14 (very basic).

pOH – This metric determines the basicity of a solution based on the concentration of hydroxide ions ([OH-]). The scale is also from 0 to 14.

Relationship between pH and pOH – At 25°C, for any aqueous solution, the sum of its pH and pOH always equals 14.