15 12 15. Which is ą stronger base OH or SHH? The pK, of water is...
78. a. Which is a stronger acid? OHے OH b. Which is a stronger base? . . . . .
Which is the stronger base in water, NH2- or -OH? a) NH2-, because the negative charge is delocalized making the nitrogen more willing to accept a proton. b) NH2-, because the nitrogen is less electronegative and cant hold the negative charge as well as oxygen c) -OH, because the negative charge is delocalize making the oxygen more willing to accept a proton. d) -OH, because oxygen is less electronegative and cant hold the negative charge as well as nitrogen. e)...
Please explain how to determine which one is stronger. A. Identify the stronger acid in each pair. 1.HNO2 or H2S 2.HCO2or HBr B. Identify the stronger base in each pair 1.CO32- or NO2 2.OH or H2O
Which is a stronger acid? Must explain with both, words and structures. Which is a stronger base? Must explain with both, words and structures. . Propose a mechanism for the following reaction: 2. a) Which is a stronger acid? Must explain with both, words and structures.10 pts. LOH OH 8 or b) Which is a stronger base? Must explain with both, words and structures. 5 pts. 3. Propose a mechanism for the following reaction: 15 pts. OH CH, CH H2SO4...
(b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of 9.89 and 6.21, respectively,...
Which is the stronger conjugate base, CN-or OCN-? Explain What is the K, for OCN-? [numerical value] When KOCN is dissolved in water the resulting solution is basic. Write the equation for the interaction of OCN- with water. What would be the pH of a 0.180M solution of KOCN?
please answer part (ii) (b) The amino acid lysine has the following values of pK : PK1 =2.2, pK2 = 8.9, PKR = 10.5 (the pK, of the amino group in the side chain). At pH 7 it has the structure shown below (6). Draw the structure that you would expect for lysine at pH 9.7, indicating the charges as appropriate. HZN 0 HINA (2 marks) (c) Phenol (C6H5OH) and 2,4,6-trichlorophenol (C6H2C13OH) are both weak acids with pK, values of...
1. Which is a stronger base ethanol (CH3CH2OH) or ethoxide anion (CH3CH2O-ve) and why. 2. Rank the following bases from strongest to weakest and explain why you put the bases in that order. a) diisopropyl amide b) ethanethiolate c) ethoxide anion d) tert-butoxide anion
answer all parts (a and b) please! Hydrogen sulfide (H2S) is a diprotic weak acid which can be used to selectively precipitate metal sulfide compounds from solution. The two deprotonation reactions of hydrogen sulfide are provided below along with their respective acid dissociation constants. H2S(ag) + H2O7) = HS (an) + H30+(aq) Kal = 1.0 * 10-7 HS (aq) + H2O) = 52 (ag) + H30 (29) K22=1 * 10-19 Imagine you have an aqueous solution buffered at pH 3...
A 13. (a) Which would have the stronger intermolecular force, CHA or Cla? Briefly explain your answer. V (b) CHa boils at 111 k while Cola boils at 350 K. Does this data support or contradict your answer to part (a)? Briefly explain eng point 14. Why does ethane (CH) have a higher boiling point (184 K) than methane (CH 111 K)? 163 Model III: Another set of boiling point data Substance Boiling point Boiling point HF Substance HO H...