Question

To increase the acidity of soil, you can add peat, which contains a complex acid mixture known as humic acid. The complexity of the humic acid makes it difficult to determine how acidic you are making the soil. You decide to use a titration to get a better measure. If titration of a 52.6 mL extraction from the peat requires 8.6 mL of 1.0 mM sodium hydroxide, what is the concentration of humic acid in the peat?