Concerning the equation, NH3 + H20 <-> NH4+ + OH", (<-> consider as an equilibrium arrow) which of the following statements are TRUE? (i) NH3 and OH are weak bases. (ii) NH3 is a Bronsted base and NH4+ is its conjugate acid. (iii) H20 is a Bronsted acid and OH is its conjugate base. (iv) NH4+ is a weaker acid than H20. Oi, ii, iii Oi, i Oii, iv O ii, iii o all statements are true
13 Which SN2 reaction is each pair is faster? 10 points ~ 40- ête. Por eBook References OH. Br OOCH3 La ci LOH + 0 Reset Prev 13 of 18 !!! Next >
Draw a curved arrow mechanism for the following reaction. OPP OH OPP HO c) The diene product in part A could have done an intramolecular reaction which is often faster. Explain (1 sentence) why in this particular Vulcan biochemical system, the intermolecular reaction to form a triene could lead to the major product.
RM-Q23 Which reagent should you use to carry out the following reaction? OH НАС OH H3C Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a LiAlH4 b BH3-THE с Hydrogen/Pd d DIBAL-H/dilute acid RM-240 What is the IUPAC name of the following compound? li Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer a 3-methyl-5-heptanone b 5-ethyl-3-hexanone с 5-methyl-3-heptanone d 2-ethyl-4-hexanone
RM-Q23 Which reagent should you use to carry out the following reaction? OH H₃C OH H2C Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. а LiAlH4 b BH3-THF с Hydrogen/Pd d DIBAL-H/dilute acid Unanswered Say
Eukaryotic mRNA is modified during and after transcription. Which end of the mRNA is shown on this page and what is the common name for this structure? What is the name of this base (see arrow) and how is it connected to the remaining part of the structure? H3 9% HN H2N Base OH OH OH он он What other DNA modification exist in eukaryotes? Question 12 (6 points) Can the nucleotide sequence of an mRNA be predicted from the...
FOTO UV 1. Which of the molecules shown can exhibit optical isomerism? Use an arrow to indicate the chiral center in each optically active molecule. OH NH2 CH3-CH-COOH glycine CH3CH-COOH lactic acids ОН row S1 HOCH CH-CH2OH cibo no glycerol DUO 2. In this experiment, you found that a molecule with one chiral center has two optical isomers, and a com- pound with two chiral centers has four optical isomers. How many optical isomers are possible for a com- pound...
RM-Q4 Which of the following undergo decarboxylation upon heating? OH CO H CO H COZH COH CO H -COH II IV Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a I and III b I and IV с Il and III d Ill and IV RM-Q1 What is the IUPAC name of the following compound? O J |НО, OH Select an answer and submit. For keyboard navigation, use the up/down arrow...
5. For the following reaction step, indicate which pattern of arrow pushing it represents. Circle one. -Ogr Br A. proton transfer C. nucleophilic attack B. loss of leaving group D. rearrangement 6. The following reaction has three mechanistic steps (down, across, and up). Draw all of the curved arrows necessary to complete the mechanism. (Hint: there should be 4 arrows total.) HBO OH Br H-Br OH2 + H₂ö:
Which of these reagents will not give the transformation below? OH Br o A) Mg + CO2, H30 NaCN H20, H B) o C) Mg, ether H Cro, H,0 D) Mg H30 CO2 E) Li (2 equiv.) CO2 H30 Select an answer and submit. For keyboard navigation, use the up/down arrow kays to select an answer. a a b b c C d d