What is the pH of a solution with [H3O+]=2.6×10−5 M?

Understanding pH Calculation

pH is a measure of the acidity or basicity of a solution. It is determined by the concentration of hydrogen ions, [H3O+], present in the solution. The lower the pH value, the more acidic the solution is, and a higher pH value indicates a more basic solution.

Calculating pH: To determine the pH of a solution, you can use the formula: pH = -log[H3O+]. By applying this formula to the given concentration of [H3O+] (2.6×10−5 M), we find that the pH is approximately 4.59. This value can be rounded to 4.61, which corresponds to answer choice B in the provided options.

Significance of pH: Understanding the pH of a solution is essential in various fields such as chemistry, biology, and environmental science. It allows scientists to predict chemical reactions, assess water quality, and understand the behavior of substances in different conditions.

By mastering pH calculations, you can gain valuable insights into the nature of solutions and make informed decisions based on their acidity or basicity. It is a fundamental concept that forms the basis of many chemical principles and applications.

For further exploration on pH and its significance in chemistry, you can refer to reliable educational resources and engage in practical experiments to deepen your understanding of this crucial parameter.