Answers to "Fountain of Knowledge" Acid base problems

1. 12.18
2.  1.0
2.  3.19

3.  See notes from class, see the book, see the Buffy and the Vampire Slayers lab for Gen Chem.

4.  See notes from class, see the book


5.  Using 142 g/mol for the dibasic sodium phosphate and 120 g/mole for the monobasic sodium phosphate:
Weigh out 6.6 grams of monobasic sodium phosphate and 6.2 g of dibasic sodium phosphate add  500 mL of water, stir, check pH.

6. 70 mL

7.  1.18 x 10^-7M or 1.78 x 10^-9 moles

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