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Unformatted text preview: KCl, NaBr, NaH 2 PO 4 , NaF, KNO 2 (2 points) Write an equation for the reaction that occurs when the salt dissolves in water and makes the solution basic. 3. a) (10 points) What is the pH of a buffer solution prepared from adding 60.0 mL of 0.22 M nitrous acid (HNO 2 ) solution to 50.0 mL of 0.24 M sodium nitrite (NaNO 2 ) solution? (K a for HNO 2 is 7.1 x 10-4 ). b) (10 points) What is the new pH if 10.0 mL of a 0.20 M solution of NaOH is added? 4. Will a solution of the salt NH 4 F be acidic, neutral or basic? (K a for HF is 6.8 x 10-4 , and K b for NH 3 is 1.8 x 10-5 ) a) (1 point) Write your answer here: The solution will be ________________________ b) (5 points) Explain how you reached your answer....
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This note was uploaded on 01/15/2012 for the course CHM 2046 taught by Professor Veige/martin during the Spring '07 term at University of Florida.
- Spring '07