Match the pH environment to the major ionization state of Histidine. (Not one-to-one.) pH = 1...
Match the pH environment to the major ionization state of Histidine. (Not one- to-one.) pH = 1 pH = 2 pH = 4 pH = 7 pH = 12 pka = 6.0 OH pKa = 1.82 HEN 02 pKa = 9.17 HEN ΑΝ Η oo HN
(1) The following diagram represents a titration curve of histidine as pH increases; pKa = 1.82 represents the terminal carboxylic acid group. pK, represents the terminal amino group: 6.0 represents the R-group, and pK, E 9.17 7.59 pH 182 3.0 20 10 H (equivalents) At what point on the diagram is histidine predominantly present as the following species? COO A, at pH < 1.82 B. between pH 1.82 and pH 6.0 C) between pH 6.0 and pH 9.17 D. at...
Question 15 (4 points) What is the correct structure of histidine at pH 1? The pKa values are 1.8 (carboxylic acid), 9.2 (amine (conjugate acid)), and 6.0 (sidechain, the double bonded N in ring)? OH OC H2 NH CH NH, NH CH NH o NH CHC NH ON OH С NH H2 CH-C NH2 Question 16 (4 points) Which one is the major product of the following reaction sequence? NH2 1. excess CH31 2. Ag,0,H,O heat M my
Examine the polypeptide in its major ionization state at pH 1. -How many amino acids are present in this peptide? **Can you please circle them and label? I'm having a hard time identifying where they are. The chart I have seems off from what I see here. -Also, at what pH in an isoelectric focusing gel should you look for this purified peptide? Explain. Thanks for the help! OH HAN OH IZ (CH2), CH 9 HEN 6
can’t figure any of this out, please help all of it 1-5. Match the functional group indicated by the arrow to the correct classification Quinine used to treat malaria 2. OH Hºme Church Hyco-OH Nysatin A, 3. CH, CH, OH A) primary alcohol B) secondary alcohol C) tertiary alcohol D) phenol E) thiol сн, он CH, OH не OH CONH2 -OH Tetracycline, an antibiotic 6-10. Given the following list of acid strengths of some medications, match the acid to the...
Can you please show math, formulas and explain. 1. If the pH of a solution is 7.5, what is the pOH? pH = - log[H+] [H+][OH-] = 1.0 x 10-14 M2 2. Given the Ka values for two acids, determine the pKas and which is a stronger acid. Ka1 = 1.38 × 10–7 Ka2 = 1.70 × 10–4 3. The pH of a sample of blood is 7.4, while gastric juice is pH 2.4. The blood sample has: A) one...
help solve all these questions 1. Calculate the pH of a 0.10 M nitric acid solution. How does your calculation compare to your experimental pH? 2. Calculate the pOH, pH, and [H'] of a 0.10M KOH solution. How does the pH compare with your data? 3. Use your date to calculate the [H*], pOH, and [OH] of the 0.10 M acetic acid solution. 4. Use your data to calculate the pOH, pH, and [H'] of the 0.10M ammonia solution. Unknown...
Question 5 Match each reaction from Column A with its respective major product(s) from Column B. Each product can only be used once. COLUMNA COLUMN B o + "OH OH A) NO2 19 HAN AICI 2N BH 3) H30* B) ON C) B1) My ОН 2) CO2 33 H,0* 4 CH,OH D) E) 3) OH 1 DBAL-H 2)Ph PCH 3) mCPBA 1) SOCI2 2. CH_NH. Pyridine OH 3) excess LAHA 4)H,0* F) O 4) Ko excess HE H) 5) H20...
Question 6 (1 point) in the A pH versus rate curve with an inflection point at pH-4 suggests the involvement of an catalytic step Question 8 (1 point) Cellulose and glycogen are both structural polysaccharides proton donation that is mediated by a coenzyme True False free proton surrounded by a hydrophobic environment proton transfer with a pK close to 4 Question 9 (1 point) proton abstraction that requires a metal ion in close proximity The activity of lysozyme is greater...
Match up the solution with the pH expected. between 7 and 12 1. 0.0100 M HCI TUDOD 12.00 2. 0.0100 M acetic acid between 2 and 7 3. 0.0100 M ammonia 2.00 4. 0,0100 M NaOH Fe 2: What is the pH if [OH-] -0.0001000 Only give two digits after the decimal point. Your Answer: