Calculate the pH of this solution.

Question

Calculate the pH of this solution. Round to the nearest hundredth.

pOH = 3.45

Answer 1

For an aqueous solution at 25°C, pH and pOH are related through the following formula:

pH + pOH = 14

Use this formula to get the answer to your question above.

Answer 2

When you are solving for the pH and the pOH of a solution, you need to remember the relationship between the two.

pH + pOH = 14

Since the pOH is known at 3.45, you can plug that into the equation above and solve for the pH.

pH + 3.45 = 14

pH = 14 - 3.45

pH = 10.55

When you are using addition or subtraction, you will need to consider the decimal places as significant. Since you have two decimal values, you will need to have two decimal values in your answer.

Answer 3

You should know/learn the relationship between pH and pOH. This relationship is..

pH + pOH = 14

Now, we know the pOH is 3.45, so it is easy to calculate the pH

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 3.45

pH = 10.55