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Unformatted text preview: 2 E. 587 mL HNO 2 ; 413 mL KNO Question # 3 For a solution equimolar in HCN and NaCN, which statement is false? http://chemmac1.usc.edu/cttccgi/randquiz.cgi 2 of 2 A. This is an example of the common ion effect. B. The [H + ] is larger than it would be if only the HCN was in solution. C. The [H + ] is equal to the K a . D. Addition of more NaCN will shift the acid dissociation equilibrium of HCN to the left. E. Addition of NaOH will increase [CN-] and decrease [HCN]. Question # 4 For ammonia, K b is 1.8 x 10-5 . To make a buffered solution of pH 10.0, the ratio of NH 4 Cl to NH 3 must be: A. 1.8 : 1 B. 1 : 1.8 C. 0.18 : 1 D. 1 : 0.18 E. none of these Grade Answers...
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This note was uploaded on 08/21/2008 for the course CHEM 105BL taught by Professor Warshel during the Spring '07 term at USC.
- Spring '07