Please help! 1. If each of the bases below is prepared as a 0.020 M aqueous solution, which one willhave the lowest pH?a) CH5NH2b) NH3c) CH3NH2d) CSH$N2. 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 largeadditions of acid. Which buffer system would be most appropriate?a) 0.2M HF /2.0M NaFb) 2.0M HF /2.0M NaFc) 2.0M HF /0.2M NaFd) 0.2M HF /0.2M NaF4. Which of the following substances can be classified as a Lewis base?O2COCu2Fa) O2 onlyb) O2 and COc) O2, CO and Cu²+d) O2, CO and F5. The boiling point of ethanol is 78 °C. For which of the following processes willAHan, ASPxn, and AGn all be negative?

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Answered: 1. If each of the bases below is…

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

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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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Please help!

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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