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- a. For this acid-base reaction: C⊖H3 + H3O+ −−→ CH4 + H2O, the conjugate acid of carboanion (C⊖H3) is _________________ b. Complete the equation: HC≡N + NaOH −−→ ___________+__________ c. Rank the acidity of these: NH3, HF, H2O, HCl, NaH Most acidic______>_______>_______>_______>_______least acidic d. The Ka of acetic acid (found in vinega) is 1.8×10-5. Then the pKa of formic acid isTunicates are marine animals that are called "sea squirts" because when they are taken out of water, they tend to contract and expel seawater. Lepadiformine is a cytotoxic agent (toxic to cells) isolated from a marine tunicate. During a recent synthesis of lepadiformine, the investigators observed the formation of an interesting by-product (3) while treating diol 1 with a reagent similar in function to PBr3 (J. Org. Chem. 2012, 77, 3390–3400):Explain this result: Acetic acid (CH3COOH), labeled at its OH oxygen with the uncommon 18O isotope (shown in red), was treated with aqueous base, and then the solution was acidified. Two products having the 18O label at different locations were formed.
- Why do you think an axial cyano subsitiuent causes practicaly no 1,3 - diexial stericstraine? Use molacular model to help .The SN2 reaction of (S)-2-brombutan with cyanide (-CN) with the others from the server.Explain this result: Acetic acid (CH3COOH), labeled at its OH oxygen with the uncommon 18O isotope (shown in red), was treated with aqueousbase, and then the solution was acidified. Two products having the 18Olabel at different locations were formed.
- 2 stereochemistry of brivaracetum, and it is rather interesting to see the methods they use to determine the structure of different isomers. Do you think this likely causes problems when it comes to stereoselectivity of binding sites?For the given below ee values, calculate the percentage of each enantiomer present. 60% eeHow do I rearrange this equation to isolate c? a=b(1/c-1/d)