PH & pOH Notes 1. What is the range for the pH scale? What is the range for acidic pH? What pH is neutral? What is always the total of the pH + pOH.

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Presentation transcript:

pH & pOH Notes 1. What is the range for the pH scale? What is the range for acidic pH? What pH is neutral? What is always the total of the pH + pOH equal? 2. What does the prefix “p” in the terms pH or pOH mean? What is the definition of pH?

Steps To Finding pH & pOH Examine the formula of the compound. If the compound has H+ in the formula then that solution is an acid. This will give you the pH. If the compound has OH in it then that compound is a base and will give you the pO Next write the concentration (Molarity) as a “power of ten as 1 x 10-X X = # of decimal places. The positive number for X will be the pH if an acid or pOH if a base. Find the other by subtracting the one you found from 14. pH + pOH = 14.

4. Determine the pH and pOH and pOH of the following: 0.00001 M LiOH 0.001 M HBr 0.0001 M HF 0.0001 M KOH 0.001 M HCl

pH = 5.4 then pOH = _________ Is this acidic or basic? ______________ B. pOH = 2.7 then pH = __________ Is this acidic or basic? ____________