How would you Calculate the H3O ion concentration in a solution with pH3 and a solution with pH8?

In a solution, hydrogen ions normally bond with molecules of water, forming H3O+ (hydronium) ions. Thus, the concentration of the hydronium ions will be the same as the concentration of hydrogen ions, which is related to the pH of a solution according to the following equation:

pH = -log[H+] = -log[H3O+]

This equation can be solved for the concentration of hydronium ions:

[H3O+] = 10-pH

Thus, for a solution with a pH of 3, the concentration of hydronium ions will be 10-3 = 0.001 moles/liter, and for a solution with a pH of 8, the concentration of hydronium ions will be 10-8 = 0.00000001 moles/liter.
16 people found this useful
Thanks for the feedback!

Basic Chemistry Guide: Ions

Within the study of chemistry, understanding the properties and functions of ions is one of the early topics any student should master. Ions may exist in a variety of ways, so (MORE)

Chemistry Reactions That Make Ice Melt

What makes ice melt? You may have seen the salt spread on the street or sidewalk to melt the ice and make it safe. When making homemade ice cream you put salt on the ice to ma (MORE)

What would its new pH be if the concentration of H3O plus ions in the solution were increased by 100 times and why?

Going from right to left, each number on the ph scale represents a 10 fold increase in the concentration of H3O+ ions. For example, water has a ph of 7. Urine has 10 times mor (MORE)

Litmus Paper: An Introduction

What is litmus paper? Litmus paper is a chemical indicator, and is one of the most common among its kind, since it is the most widely used. It is known to change color when it (MORE)