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9. Which of the following statements is FALSE of electrophiles and nucleophiles? A) Anionic molecules tend...
please answer questions 9-12 Question 9 1 pts Which of the following statements describes the reactivity...
please answer questions 9-12
Question 9 1 pts Which of the following statements describes the reactivity of alkynes? An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. When a symmetrical internal alkyne reacts with HBr, two products are formed. Unlike alkenes, alkynes fail to undergo electrophilic addition reactions The o bonds of alkynes are greater in energy than the rt bonds and, therefore, are more reactive Alkynes react as electrophiles, whereas alkenes react as nucleophiles What is...
Check which of the following statements are TRUE. A. Ketones are more reactive as electrophiles than...
Check which of the following statements are TRUE. A. Ketones are more reactive as electrophiles than aldehydes. B. One method of shifting the equilibrium in the direction of the ester, in the Fischer esterification reaction, is to remove water as it is formed. C. Methoxy benzene is an activator AND a meta-director D. The following sequence will result in formation of a ketone 1. RCOCl, Ph2CuLi 2. H3O+ E. When a ketone is reacted with LDA (iPr2NLi), the LDA is...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
just need (e) to (h) 5. Molecules with an-OH group directly bonded to a C-C sp...
just need (e) to (h)
5. Molecules with an-OH group directly bonded to a C-C sp hybridized carbon are called "enol"'s. The types of chemical reactions which enols undergo are substantially different from those of normal alcohols. By considering the Brensted-Lowry and Lewis acid/base reactivity of an enol, you can predict a few of these differences. (a) Ethenol, the simplest "enol", can react as a BL. base in three different places, by gaining a proton at either of the two...
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the...
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the better nucleophile in MeCN b) the better nucleophile in CH3OH CH3S or CH30 c) the ion that will give the higher substitution to elimination product ratio CH3S or CH30 Won d) the more reactive alkyl halide in a solvolysis reaction aior e) the more reactive alcohol towards substitution — он оr f) the more reactive alkyl halide in an E2 reaction balt Br g)...
9. Identify each of the following molecules as aromatic, antiaromatic or nonaromatic. (For this problem, you...
9. Identify each of the following molecules as aromatic, antiaromatic or nonaromatic. (For this problem, you may assume that each molecule can and will be planar, if that influences the analysis.) NUMBERS 10 and 11 are BIZZZZ-ONUSI (.e., bonus) 10. In learning about 1,2-vs. 1,4-addition to dienes, we discussed kinetic vs. thermodynamic control Apply what we learned in that discussion to the following reaction, with its reaction coordinate diagram shown to the bottom left. O K THF K B: +...
4. Reaction Fill-ins! Predict the product(s) OR starting material of the following reactions. Remember Hydride shifts a...
4. Reaction Fill-ins! Predict the product(s) OR starting material of the following reactions. Remember Hydride shifts are possible if when a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes. H2SO4 (cat.), H20 а. 1.4-product 1.2-product Br Br HBr b. Br Major product Minor produt Minor product HCI C. 1,2-product 1,4-product HI он MAJOR prod Minor prod. e. Draw the FULL electron-pushing mechanism for the reaction in part a above, INCLUDING ALL resonance...
Answer Questions 3 & 4 please Rank each of the following sets of compounds in order...
Answer Questions 3 & 4 please
Rank each of the following sets of compounds in order of increase acidity A (a) CH4 (b) CHCI; (c) CH3CI (d) CH2Cl2 CI B (a) OH (b) (c) OH ОН (а) (b) OH 4. Complete the following reactions (use curved arrows to show the flow of electron pairs in each reaction) and label the reagent that acts as a nucleophile and the one that acts as electrophile. If any. A CH3CO2H + OH- B...
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts...
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible ifwhen a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H,SO, (cat), H,о а. 1,2-product 1,4-product Br Br HBr b. Br Minor produt Major product Minor product HCI C. 1,2-product 14-product HI Он MAJOR prod. Minor prod e. Draw the FULL electron-pushing mechanism for the reaction in part a above. INCLUDING ALL resonance contributors....
Chem 202, Fall 2019 Homework Packet 8 (Resonance and Aromaticity) 4. Reaction Fill-ins! Predict the product(s)...
Chem 202, Fall 2019 Homework Packet 8 (Resonance and Aromaticity) 4. Reaction Fill-ins! Predict the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible if/when a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H2SO4 (cat.), H20 а. 1,2-product 1,4-product Br HBr Br Minor produt Minor product Major product НC C. 1,2-product 1,4-product HI d. ОН MAJOR prod Minor prod e. Draw the FULL electron-pushing mechanism for the...
please answer questions 9-12
Question 9 1 pts Which of the following statements describes the reactivity of alkynes? An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. When a symmetrical internal alkyne reacts with HBr, two products are formed. Unlike alkenes, alkynes fail to undergo electrophilic addition reactions The o bonds of alkynes are greater in energy than the rt bonds and, therefore, are more reactive Alkynes react as electrophiles, whereas alkenes react as nucleophiles What is...
9. Which of the following statements about enzyme catalyzed reactions is NOT true? a. Enzymes form complexes with their substrates b. Enzymes lower the activation energy for chemical reactions c. Enzymes change the Key for chemical reactions d. Many enzymes change shapes slightly when substrate binds 10. To overcome an energy barrier between reactants and products, energy must be provided to get the reaction started. This energy, which is recovered as the reaction proceeds, is called: a. Activation energy b....
just need (e) to (h)
5. Molecules with an-OH group directly bonded to a C-C sp hybridized carbon are called "enol"'s. The types of chemical reactions which enols undergo are substantially different from those of normal alcohols. By considering the Brensted-Lowry and Lewis acid/base reactivity of an enol, you can predict a few of these differences. (a) Ethenol, the simplest "enol", can react as a BL. base in three different places, by gaining a proton at either of the two...
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the better nucleophile in MeCN b) the better nucleophile in CH3OH CH3S or CH30 c) the ion that will give the higher substitution to elimination product ratio CH3S or CH30 Won d) the more reactive alkyl halide in a solvolysis reaction aior e) the more reactive alcohol towards substitution — он оr f) the more reactive alkyl halide in an E2 reaction balt Br g)...
9. Identify each of the following molecules as aromatic, antiaromatic or nonaromatic. (For this problem, you may assume that each molecule can and will be planar, if that influences the analysis.) NUMBERS 10 and 11 are BIZZZZ-ONUSI (.e., bonus) 10. In learning about 1,2-vs. 1,4-addition to dienes, we discussed kinetic vs. thermodynamic control Apply what we learned in that discussion to the following reaction, with its reaction coordinate diagram shown to the bottom left. O K THF K B: +...
4. Reaction Fill-ins! Predict the product(s) OR starting material of the following reactions. Remember Hydride shifts are possible if when a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes. H2SO4 (cat.), H20 а. 1.4-product 1.2-product Br Br HBr b. Br Major product Minor produt Minor product HCI C. 1,2-product 1,4-product HI он MAJOR prod Minor prod. e. Draw the FULL electron-pushing mechanism for the reaction in part a above, INCLUDING ALL resonance...
Answer Questions 3 & 4 please
Rank each of the following sets of compounds in order of increase acidity A (a) CH4 (b) CHCI; (c) CH3CI (d) CH2Cl2 CI B (a) OH (b) (c) OH ОН (а) (b) OH 4. Complete the following reactions (use curved arrows to show the flow of electron pairs in each reaction) and label the reagent that acts as a nucleophile and the one that acts as electrophile. If any. A CH3CO2H + OH- B...
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible ifwhen a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H,SO, (cat), H,о а. 1,2-product 1,4-product Br Br HBr b. Br Minor produt Major product Minor product HCI C. 1,2-product 14-product HI Он MAJOR prod. Minor prod e. Draw the FULL electron-pushing mechanism for the reaction in part a above. INCLUDING ALL resonance contributors....
Chem 202, Fall 2019 Homework Packet 8 (Resonance and Aromaticity) 4. Reaction Fill-ins! Predict the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible if/when a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H2SO4 (cat.), H20 а. 1,2-product 1,4-product Br HBr Br Minor produt Minor product Major product НC C. 1,2-product 1,4-product HI d. ОН MAJOR prod Minor prod e. Draw the FULL electron-pushing mechanism for the...
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