Lab - pH Lab

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					                                                               Name: ______________________________ Per: ____



                                                Lab: pH Lab
I. Review Questions:
    1) What is the pH of acidic solutions? ______________
    2) What is the pH of basic solutions? ______________
    3) What is the pH of neutral solutions? _____________
    4) What happens when an acid and base mix together in solution? _________________________
_____________________________________________________________________________

II. Below, fill out the “Hypothesis” section of the data table.

III. Use the red and blue litmus paper and the pH paper to test whether each solution is an acid, base, or
neutral solution.

          Substance             Hypothesis:       Color the      Color the     pH of      Actual Answer:
                               Acid, Base, or    RED litmus    BLUE litmus      the       Acid, Base, or
                                  Neutral       paper turned   paper turned   solution   Neutral Solution?
                                 Solution?
   1) Citric Acid,
   HC6H7O7

   2) Ammonia,
   NH4+ + OH-

   3) Magnesium
   Hydroxide,
   Mg(OH)2
   4) Water,
   H2O

   5) Acetic Acid,
   HC2H3O2

   6) Sodium Bicarbonate
   (Baking Soda) in water,
   NaHCO3
   7) 7-Up,
   H2CO3

   8) Sodium Carbonate or
   “washing soda”,
   Na2CO3
   9) Sodium Bicarbonate
   and Citric Acid,
   NaHCO3 + HC6H7O7

				
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posted:11/30/2011
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