Basic Lowest free H kon concentration 14 - Oven cleaner (13.5) 13 TUMS 12 Household Values above 7 Indicate basic ammonia (11.7) sokutions; the higher the value, the more basic Antacids (10.5) 10 Borax (9.5) A solutlon with a pH of 10 is 100 imes more basic than a solulion with a pH of 8. the solution. Baking soda (a.3) Seawater (7.5-8.3) A pH of 7 means that the solution Is neutral. Human blood (7.4) 7-Noutral - Pure water Milk (6.5) Natural rainwater (5.6) Tomatoes (4.5) Values bolow 7 Indicate acidic solutions; the lowor the value, the more acklic the solution. A solutkon with a pH of 3 is 10 times more acidic than a solution with a pH of 4. Oranges (3.5) Lemons (2.3) Slomach acid (1.5-2.0) Highest free Hlon concentration Acidic

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