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1. If each of the bases below is prepared as a 0.020 M aqueous solution, which one will have the lowest pH? a) CH5NH2 b) NH3 c) CH3NH2 d) CSHSN

1. If each of the bases below is prepared as a 0.020 M aqueous solution, which one will have the lowest pH? a) CH5NH2 b) NH3 c) CH3NH2 d) CSHSN

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. If each of the bases below is prepared as a 0.020 M aqueous solution, which one will have the lowest pH? a) CH5NH2 b) NH3 c) CH3NH2 d) CSH$N 2. Which of the following reactions will have a positive change in entropy (ASrxn)? b) 2 CO (g) + 02 (g) → 2 CO2 (g) a) N204 (g) → 2 NQ2 (g) CO2 (s) c) CO2 (g) d) CaO (s) + CO2 (g) CACO3 (s) 3. You wish to prepare a buffer that can resist large additions of base, but not large additions of acid. Which buffer system would be most appropriate? a) 0.2M HF /2.0M NaF b) 2.0M HF /2.0M NaF c) 2.0M HF /0.2M NaF d) 0.2M HF /0.2M NaF 4. Which of the following substances can be classified as a Lewis base? O2 CO Cu2 F a) O2 only b) O2 and CO c) O2, CO and Cu²+ d) O2, CO and F 5. The boiling point of ethanol is 78 °C. For which of the following processes will AHan, ASPxn, and AGn all be negative?
Transcribed Image Text:1. If each of the bases below is prepared as a 0.020 M aqueous solution, which one will have the lowest pH? a) CH5NH2 b) NH3 c) CH3NH2 d) CSH$N 2. Which of the following reactions will have a positive change in entropy (ASrxn)? b) 2 CO (g) + 02 (g) → 2 CO2 (g) a) N204 (g) → 2 NQ2 (g) CO2 (s) c) CO2 (g) d) CaO (s) + CO2 (g) CACO3 (s) 3. You wish to prepare a buffer that can resist large additions of base, but not large additions of acid. Which buffer system would be most appropriate? a) 0.2M HF /2.0M NaF b) 2.0M HF /2.0M NaF c) 2.0M HF /0.2M NaF d) 0.2M HF /0.2M NaF 4. Which of the following substances can be classified as a Lewis base? O2 CO Cu2 F a) O2 only b) O2 and CO c) O2, CO and Cu²+ d) O2, CO and F 5. The boiling point of ethanol is 78 °C. For which of the following processes will AHan, ASPxn, and AGn all be negative?
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