How to Find the pH of a Solution Given the Molarity

Using a Graphing Calculator

• 1

  Press the button marked "-" . A negative (-) sign will appear on the screen.

• 2

  Press the button marked "log" to include logarithm in the calculation. Negative logarithm is now ready to be calculated.

• 3

  Enter the molarity value of the solution and press enter or the result button. The answer displayed on the screen is the required value of the pH of the solution.

Using a Scientific Calculator

• 4

  Enter the value of molarity of the given solution. Press enter so that the value is displayed as the answer on the screen.

• 5

  Press the button marked "log" to take logarithm of the answer or the molarity value. Press enter to get the logarithm of the molarity value.

• 6

  Press the button marked "-/+" to include a negative (-) sign in the logarithm value. This is the pH value of the solution.