# How Do You Find The Ph And Poh?

In order to calculate the pH, take the negative log of the hydronium ion concentration. To find the pOH, simply subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration. To find the pH, simply subtract pOH from 14.

## How do you find the pH?

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+].

## What is the formula of pOH?

The pOH of a solution is the negative logarithm of the hydroxide-ion concentration. by this yields a [OH ] of 1.0 × 10 10 M. Finally the pOH of the solution equals -log(1.0 × 10 10 ) = 10.

## What is pH and pOH of a solution?

pH and pOH denote the negative log of the concentration of hydrogen or hydroxide ions. High pH means that a solution is basic while high pOH means that a solution is acidic. Neutral solutions have pH and pOH of 7.

## How do you find OH with pOH?

The hydroxide ion concentration can be found from the pOH by the reverse mathematical operation employed to find the pOH. [OH-] = 10-pOH or [OH-] = antilog ( – pOH) Page 2 Example: What is the hydroxide ion concentration in a solution that has a pOH of 5.70? On a calculator calculate 10-5.70, or “inverse” log (- 5.70).

## What is the pOH if the pH is 4?

The pOH Concept Consider a solution with a pH = 4.0. The [H+] of the solution would be 1.0 × 104 M. Dividing Kw by this yields a [OH] of 1.0 × 1010 M. Finally the pOH of the solution equals -log(1.0 × 1010) = 10.

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## What is pH Plus pOH?

The sum of pH and pOH is always 14. This is because the product of proton concentration and hydroxide concentration must always equal the equilibrium constant for the ionization of water, which is equal to.