Carbon Dioxide, pH, and ocean acidification
Carbon dioxide and pH - Put a couple drops of phenolphthalein indicator in a flask of dilute (.01M) NaOH. The fluid should turn pink, indicating the presence of hydroxide ions. Using a straw, blow into the flask until the pink color disappears. What affect dos carbon dioxide have upon the pH of the solution?
CO2 + H2O → H2CO3 → H+ + HCO3-