2. Amines are weak bases. Table 10.2 in the course textbook provides a list of pкb values for several amines. The pк values for three amines and their structures are shown below. Explain why increased substitution on nitrogen results in an increase of the pK value. H3C-NH2 PK = 3.36 H3C N-H рко = 3.27 H3C H3C N-CH3 PK = 4.19 H3C

2. Amines are weak bases. Table 10.2 in the course textbook provides a list of pкb values for several amines. The pк values for three amines and their structures are shown below. Explain why increased substitution on nitrogen results in an increase of the pK value. H3C-NH2 PK = 3.36 H3C N-H рко = 3.27 H3C H3C N-CH3 PK = 4.19 H3C

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

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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Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pka values for various organic and inorganic acids can be found in the references section. ata CH3 CH3 -CH3 CH3 CH,- в D ethoxide ethanol dimethylsulfone anion dimethylsulfone a) The weaker base is b) Its conjugate acid is c) The species that predominate at equilibrium are (two letters, e.g. AC)
Rank the following organic molecules in order of decreasing acidity. That is, select '1' in the second column for the most acidic molecule, '2' for the next most acidic molecule, and so on. HO HO Jl. CI OH OH (Choose one) (Choose one) (Choose one) ▼ (Choose one) ▼ X
Amines are weak bases. Table 10.2 in the course textbook provides a list of pKb values for several amines. The pK values for three amines and their structures are shown below. Explain why increased substitution on nitrogen results in an increase of the pKb value. H3C-NH2 PK = 3.36 H3C N-H pKb = 3.27 H₂C' H3C N-CH3 PK = 4.19 H₂C
Ketones typically have a pka of approximately 20. While this is certainly not a strong acid it is much stronger than a typical alkane sp3-CH. using acetone as an example, explain why ketones are much more acidic than Alkanes.
Use the information in the pK table to rank the molecules in order of decreasing basicity. For example, select "1" in the second column for the strongest base a and "2" for the next strongest base and so on. CH3 HS F CH,CO, Molecules (Choose one) (Choose one) (Choose one) (Choose one) X Ś CHA 4 NH₂ H₂ CH3NH₂ 2 48 38 36 33 pk table pKa CH,NH, CH₂SH 10.4 H₂O* HCN + 10.6 9.4 NH H₂O 15.7 H₂S CH₂OH 15.5 CH,CO,H 4.76 9.2 7.00 HF CH₂OH₂ H₂SO4 HC1 HBr 3.17 -1.7 -2.2 -3.0 -7 -9
Answer questions a-c about the Bronsted acid-base reaction below using the identifying letters A-D below each structure. A table of pka values for various organic and inorganic acids can be found in the references section. H2 H2 CH3 H2C=CH2 CH OH H2C=CH D A ethoxide B ethene ethanol ethene anion a) The weaker acid is b) Its conjugate base is c) The species that predominate at equilibrium are (two letters, e.g. AC)
Draw the form of the following compound that will predominate at pH 13. HO. pKa 1.84 NH2 pКa 9.13
Identify the stronger base in each of the following pairs
Part 3: Compounds D, E and F have identical molecular formula of "C4H7CIO". Figure 3.1: ¹H-NMR of compound D Figure 3.2: ¹H-NMR of compound E 6 5 6 5 Figure 3.3: ¹H-NMR of compound F 4 write down the STRUCTURES of: compound D W 3 3 compound E 2 2 compound F
plz explain why
6. Predict the position of the equilibrium and calculate the equilibrium constant, Keq, for the following acid-base reaction. CH3NH₂+ + CH3COO- CH3NH₂ + CH3COOH methylamine acetic acid acetate ion pK₂ = 4.74 methylammonium ion pK₂ = 10.64
can I get an explanation on how to do these, please? Thank you