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Explain why the different positions have different pKa values, using resonance structures. The pka of phenol...
Using resonance structures and a brief explanation, explain why phenol (C6H5OH) is an ortho-para director (25 pts).
(b) Explain the following pKa values by drawing out resonance structures of the conjugate base for the following: (i) pKa 15.5 ethanol pKa 10 (ii) phenol pKa 7.2 (5 marks) (ii) p-nitrophenol
6. Usina resonance structures, explain why acetaldenyde has a pka of 17, while acetone of 19. 7. Using resonance structures, explain why methyl acetate (pka 25) is less acidic than acetone (pka 19). 8. Rank the following in order from least to most acidic. Explain your ranking, using resonance structures with your explanation. & la
Using resonance structures as part of your answer, explain why Br in bromobenzene is: a. A mild ring deactivator b. An o-, p-director. [Note: It is not enough to use resonance structures from part "a" to "prove" part "b". One must show that o-, p-attack is faster, i.e. has lower Ea (AGa) by actually showing an electrophile, e.g. the generalized E+, attacking at the o-, m-& p-positions and, using Hammond's Principle, explain why the o-, p-attacks are favored.] Explain what...
3) Draw resonance diagrams to explain why phenol has a pka pf 10 whereas aliphatic alcohols like ethanol have a pka of 16. 4) Why are aldehydes generally more reactive towards nucleophilic attack than ketones? 5) Suggest possible steps involved in the synthesis of the following compound starting propene. Note for each step involved your desired product must be a major product. Also note the two arrows indicate an unknown number of steps are involved.
Does CH3CN have resonance structures? Explain why or why not? If there are resonance structures, please draw them.
Using the values for the resonance energies of benzene and naphthalene given above, explain why Dies-Aider reaction of anthracene tack place at the center ring, not one of the end rings.
Explain why compound A is more acidic using resonance structures and question 21. WILLUDUlyalli Clemsty ENAM 20. Explain why Compound A is more acidic than Compound B. Use resonance structures to e 21. Which of the following is the least stable carbocation? Circle your response. (2) IV
the two carboxylic acid groups of aspartic acid have different acidities with pKa values of 2.1 and 3.9. Predict which acid group is the more acidic by considering the effect of the -nh3+ group on the stability of the conjugate bases. Explain your reasoning.
Please Explain: 7) a. Why does an acid and its conjugate base have the same pKa and Ka values? b. Why does a base and its conjugate acid have the same pKa and Ka values? Thank You! <3