Draw the predominant form of histidine at pH-=0. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars bond is active by default. + Z 20 7 EXP. CONT H CONT H₂C Α [1] HN+ NH OH H I UZ OSō Br
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![Draw the predominant form of histidine at pH-=0.
Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars
bond is active by default.
+
Z
20
7
EXP.
CONT
H CONT
H₂C
Α
[1]
HN+
NH
OH
H
I UZ OSō
Br](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe30c5dfd-22e5-43e4-a344-ec8c335a1df7%2F2bfbe2b8-c032-4a62-a504-5151f54b5869%2Fhzinsv9_processed.jpeg&w=3840&q=75)
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Solved in 2 steps with 1 images
- Consider the structurs of pyrolidine and N- nethylpyrrolidine belww: CH3 Purolidine N-methy lpvorolidine O Sketch next to the Shruchures their dhpoles and jushly yur Choice for their direchon and lengths. No Calcula hon is reguired. b) Which molecule is more N- methylpyrrolidine? Why? basic in water, Pyrolid me orWhat are the most likely products formed from mixing the following neutral compounds? HINT: The most acidic proton in the acid will be transferred to the most basic site in the base. OH НО A В C D НО О А ABC В о с НО + OH OH NH₂ NH₂ + NH3 NH3 NH₂2An aqueous solution contains 0.115 M carbonic acid and 0.192 M hydroiodic acid. Calculate the carbonate ion concentration in this solution. [Co,?] =| mol/L.
- CH Post Lab ET O 44 Is saloviglvoyig'lo wouna inenimob stotis W A+H3N-CH-C-OH F CH-CH3 CH3 5. The structure of amino acid valine (Val) is as follows: The pKa for the carboxylic acid group is 2.29; the pKa for the protonated amine group is 9.74. What is the pl value of Val?Modify isoleucine to show its structure at pH 1 and pH 13. Modify each amino acid by adding or removing atoms or bonds and by adding charges where appropriate. pH 1 pH 13 Select Draw Rings More Erase Rings More Erase C с CH₂ CH₂ H₂C H₂N 1 CH₂ | CH | 310 H― H O H N U с || 0 H Q2 Q Select Draw / ||| ||| H₂C H₂N 1 CH₂ | CH - n O H | H 0 H N H Q2QKeactrons contmued- -et ALCI2 AICla NBS hD erRoaR za/t NCI
- The amino acid histidine has ionizable groups with pKą values of 1.8, 6.0, and 9.2, as shown. COOH T H₂N-CH | CH₂ H -O pH UT = ZI Ionizable -COOH group CH H₂N-CH T 1.8 COO- pk₁ CH2 UI COO™ H IZ CH -HisH+ COO™ + H₂N-CH 6.0 pK₂ CH ₂ UI -His H CH -NH COO™ H₂N-CH 9.2 pk3 CH ₂ UI —NH₂ H A biochemist makes up 80 mL of a 0.11 M solution of histidine at a pH of 5.1. She then adds 60 mL of 0.10 M HCl. What is the pH of the resulting solution? CH(Q22) Which of the following pairs is not or could not produce a buffer solution? O CH3COO"/OH O NH3/NH4* O CH;COOH/CH3COO O CH3COOH/OH O NH3/HCIA novel new method of peptide synthesis involves formation of an amide bond by reaction of an a-keto acid with an N-alkylhydroxylamine. OH R CO2 R' R R' + CO2 + H2O Draw curved arrows to show the movement of electrons in the following step of the reaction mechanism. Arrow-pushing Instructions X R :0: :O: R' H:OH H-A بد R :O: Nx- R' H2O CO2 A H- (18
