If the pH of a solution is decreased from 9 to 8, it means that? the concentration of H* decreased by 10 fold and the OH" increased by 10 fold the concentration of H* decreased by 10 fold the concentration of H* increased by one fold the concentration of OH" increased by 10 fold the concentration of H* decreased by one fold the concentration of H* increased by 10 fold and the concentration of OH" decreased by 10 fold A 1-L unbuffered solution needs the pH adjusted from 3 to 1.5. How many mL of 2 molar HCI solution need to be added to reduce the pH? Report your answer using exponential notation to two decimal places! For example 100 would be 1E2, or 0.001 would be 1e-3 For this question, assume the volume of HCI being added is negligible and the total volume of the solution does not change.

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