the pH of colorless solution is 3. find its [H+] and [OH-] cancentration

To find the concentration of hydrogen ions ([H+]) and hydroxide ions ([OH-]) in a solution based on its pH, you need to understand the relationship between pH and the concentration of these ions.

The pH scale is a logarithmic scale that measures the acidity or alkalinity of a solution. It represents the negative logarithm (base 10) of the hydrogen ion concentration in moles per liter (mol/L). Mathematically, it is expressed as:

pH = -log[H+]

To find the concentration of hydrogen ions ([H+]) in your solution, use the formula:

[H+] = 10^(-pH)

Given that the pH of the colorless solution is 3, substitute it into the formula:

[H+] = 10^(-3)

Using a calculator, calculate the value:

[H+] = 1 x 10^(-3) = 0.001 mol/L

Since water is neutral, the concentration of hydroxide ions ([OH-]) is the same as the concentration of hydrogen ions. Therefore, [OH-] in the colorless solution is also 0.001 mol/L.