test 3a - 1. What is the pH of a 0.026 molar solution of...

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1. What is the pH of a 0.026 molar solution of sodium formate? a. 2.66 b. 3.74 c. 2.99 d. 3.16 e. 5.33 2. What is the pH of a solution of a 0.0038 molar solution of hydrazine? a. 5.81 b. 4.09 c. 9.91 d. 3.16 e. 8.18 3. Which of the following acids (and its conjugate base) is best to use to prepare a buffer with a pH of 3.50? a. phenol b. propanoic acid c. chloroacetic acid d. hypochlorous acid e. butanoic acid 4. What is the ratio of the conjugate acid to the conjugate base concentration in a buffer of pOH 5.25 made from strychnine and protonated strychnine? a. 2.81 b. 5.62 c. 8.38 d. 1.8 x 10 5 e. 0.178 5. What is the pH of a buffer made from dissolving equal masses of ammonia (MM = 17.0) and ammonium chloride (MM = 53.5) in sufficient distilled water to make 500 mL of solution? a. 4.24 b. 5.24 c. 8.76 d. 9.76 e. not enough information is given to solve 6. What describes the end point of a titration of a weak base with a strong acid the best? a.
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This note was uploaded on 12/10/2009 for the course CHE 1220 taught by Professor Jespersen during the Spring '09 term at St. John's.

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test 3a - 1. What is the pH of a 0.026 molar solution of...

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