Write the Ky reactions for pyridine, for sodium 2-mercaptoethanol, and for cyanide. H+ binds to S in sodium 2-mercaptoethanol and to C in cyanide. (Hint: Spectator ions, which do not react in solution, appear on both sides of the reaction and can be removed.) N: HOCH.CHS: Na+ CN Pyridine Sodium 2-mercaptoethanol Cyanide Refer to the Ka values below for their conjugate acids. Which of the three bases shown above is the strongest? NH HOCH.CH.SH HCN Pyridinium ion K. = 6.3 x 10-6 2-Mercaptoethanol K. = 1.9 X 10-10 Hydrogen cyanide K = 6.2 x 10-10

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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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Write the Ky reactions for pyridine, for sodium 2-mercaptoethanol, and for cyanide. H+ binds to S in sodium 2-mercaptoethanol and to C in cyanide. (Hint: Spectator ions, which do not react in solution, appear on both sides of the reaction and can be removed.) N: HOCH.CHS: Na+ CN Pyridine Sodium 2-mercaptoethanol Cyanide Refer to the Ka values below for their conjugate acids. Which of the three bases shown above is the strongest? NH HOCH.CH.SH HCN Pyridinium ion K. = 6.3 x 10-6 2-Mercaptoethanol K. = 1.9 X 10-10 Hydrogen cyanide K = 6.2 x 10-10
8-11. (a) Write the K, reaction for pyridine, for sodium
2-mercaptoethanol, and for cyanide.
HOCH,CH, S: Na+
CN-
N:
Pyridine
Sodium 2-mercaptoethanol
Cyanide
H* binds to S in sodium 2-mercaptoethanol and to C in cyanide.
(b) From K, for the conjugate acids, which base in part (a) is
strongest?
NH
HOCH,CH2SH
HCN
Pyridinium ion
2-Mercaptoethanol
Ka = 1.9 X 10-10
Hydrogen cyanide
Ka = 6.2 x 10-10
K = 6.3 X 10-6
%3D
Transcribed Image Text:8-11. (a) Write the K, reaction for pyridine, for sodium 2-mercaptoethanol, and for cyanide. HOCH,CH, S: Na+ CN- N: Pyridine Sodium 2-mercaptoethanol Cyanide H* binds to S in sodium 2-mercaptoethanol and to C in cyanide. (b) From K, for the conjugate acids, which base in part (a) is strongest? NH HOCH,CH2SH HCN Pyridinium ion 2-Mercaptoethanol Ka = 1.9 X 10-10 Hydrogen cyanide Ka = 6.2 x 10-10 K = 6.3 X 10-6 %3D
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