The amino acid serine, NH2CH(CH2OH)COOH has the following pKa values: pKa1 = 2.19 pKa1 = 9.21. What is/are the major species at pH = 8.16? (Note: in this context, major species refers only to the species present in the highest concentration.) NH2CHICH2OH)COон NH2CH(CH2OH)Co O *NH3CH(CH2OH)COO *NH3CH(CH2OH)COOH Question 6 NaOH is a strong base. What is the pH of a 0.00142 mol L1 solution of NaOH? O 14.2 7.04 x 10 12 2.85

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Question 5
The amino acid serine, NH2CH(CH2OH)COOH has the following pK, values:
pK1 = 2.19 pKa1 = 9.21.
What is/are the major species at pH = 8.16?
(Note: in this context, major species refers only to the species present in the highest
concentration.)
NH2CH(CH2OH)COOH
NH2CH(CH2OH)CO0
*NH3CH(CH2OH)Coo
*NH3CH(CH2OH)COOH
Question 6
NaOH is a strong base. What is the pH of a 0.00142 mol L1 solution of NaOH?
14.2
7.04 x 10-12
2.85
11.15
Transcribed Image Text:Question 5 The amino acid serine, NH2CH(CH2OH)COOH has the following pK, values: pK1 = 2.19 pKa1 = 9.21. What is/are the major species at pH = 8.16? (Note: in this context, major species refers only to the species present in the highest concentration.) NH2CH(CH2OH)COOH NH2CH(CH2OH)CO0 *NH3CH(CH2OH)Coo *NH3CH(CH2OH)COOH Question 6 NaOH is a strong base. What is the pH of a 0.00142 mol L1 solution of NaOH? 14.2 7.04 x 10-12 2.85 11.15
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