The pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91 (option B).
<h3>How to calculate pH?</h3>
The pH of a solution in chemistry refers to the notation expressing the acidity or alkalinity of a solution.
The pH is measured on a logarithmic scale of which 7 is neutral, lower values are more acid and higher values more alkaline.
The pH of a solution can be calculated using the following formula;
pH = - log {H+}
pH = - log {0.0100}
pH = 2
Therefore, the pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91.
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