Will water cause H3P04 to increase or decrease ph levels

1 answer

Phosphoric acid (H3PO4) is a weak acid with a dissociation constant (Ka) of approximately 7.5 x 10^-3. When dissolved in water, phosphoric acid will partially ionize to form H+ ions and H2PO4- ions.

The addition of water to phosphoric acid will dilute the solution, causing the concentration of H+ ions to decrease. This will result in a decrease in pH levels, making the solution less acidic.

Therefore, adding water to phosphoric acid will cause the pH levels to increase.