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Multiple Choice: Fill in circle on Scantron sheet with pencil. 1. Which of the following anions...
9. Which of the following alkyl halides is most rea order kinetics? y halides is most...
9. Which of the following alkyl halides is most rea order kinetics? y halides is most reactive in an elimination reaction having first- A. A B.B C.C D.D E. E 10. Which of the following statements is (are) true about an E2 elimination reaction? A. It is fastest with 3 halides. B. It exhibits second-order kinetics. C. A better leaving group should make a faster reaction. D. Both (It is fastest with 3 halides) and (It exhibits second order kinetics)...
Which of the following statements about an Svl mechanism is (are) true? 4. A. The reaction...
Which of the following statements about an Svl mechanism is (are) true? 4. A. The reaction is fastest with 3° halides. B. The rate of the reaction increases when the solvent is changed from (CHs):C-O to CH&CH:OH C. The identity of the leaving group does not affect the reaction rate. D. Statements (The reaction is fastest with 3° halides) and (The rate of the reaction increases when the solvent is changed from (CHs):C-0 to CH CH OH) are true. E....
12. Label the following reactions as El or E2 * 01 - 0 a . CH...
12. Label the following reactions as El or E2 * 01 - 0 a . CH CH -- A. A =E1; B=E2 B.A=E1; B=E1 C. A E2: B-EI D. A=E2; B-E2 13. Consider the following exothermic E2 reaction. What rate equation would be observed for this reaction CH, CH CH I + KOC(CH3), CH CH CH2 + KI A. rate k[CHCH:CH-1) B. rate=k[CH,CH:CH:1][K OC(CH.)s] C. rate - [CH,CH:CH=1][K OC(CH);]* D. rate=k[CH,CH:CH-1)^[K OC(CH.):] E. There is not enough information given to...
Multiple Choice: Fill in on scantron sheet with pencil. 1. Which reaction has a positive AG,...
Multiple Choice: Fill in on scantron sheet with pencil. 1. Which reaction has a positive AG, assuming that entropy changes are negligible compared to enthalpy changes? - Ener- Energy Energy reaction coordinate reaction coordinate reaction coordinate A A B.B C.C
7. Which of the following statements is (are) true about a reaction that follows an Sul...
7. Which of the following statements is (are) true about a reaction that follows an Sul mechanism? A. The reaction is fastest with primary alkyl halides. B. The reaction exhibits a one-step mechanism. C. The reaction rate increases as the leaving group ability increases. D. The reaction rate increases as the strength of the nucleophile increases. E. Statements (The reaction rate increases as the leaving group ability increases) and (The reaction rate increases as the strength of the nucleophile increases)...
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether,...
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
Match the following statements with reaction mechanism SN1, SN2, E1, or E2. A statement may be...
Match the following statements with reaction mechanism
SN1, SN2, E1, or E2. A statement may be true
for one or more mechanisms.
a. The mechanism involves carbocation intermediates. b. The mechanism has two steps. c. The reaction rate increases with better leaving groups. d. The reaction rate increases when the solvent is changed from CH3OH to (CH3)2SO e. The reaction rate depends on the concentration of only the alkyl halide. f. The mechanism is concerted. g. The reaction of CH3CH2Br...
1. In both the sodium iodide test and the silver nitrate test, why does 2-bromobutane react faster...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
For the following substitution reactions, choose whether reaction A or B will proceed more quickly. If...
For the following substitution reactions, choose whether reaction A or B will proceed more quickly. If they will proceed at the same rate, put an equal sign,"=", in the box. Reaction Pair Faster? SN1 or SN2? A: CH3Br + CH30-→ CH3OCH3 + Br- B: CH3Br + CH3OH → CH3OCH3 + Br- + H+ Cl + NH3 NH + Cl + H+ B: Ya + Ho — you +C+++11+ OH + Cl + H+ I + NH3 NH2 +I+H+ SN2 ci...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
9. Which of the following alkyl halides is most rea order kinetics? y halides is most reactive in an elimination reaction having first- A. A B.B C.C D.D E. E 10. Which of the following statements is (are) true about an E2 elimination reaction? A. It is fastest with 3 halides. B. It exhibits second-order kinetics. C. A better leaving group should make a faster reaction. D. Both (It is fastest with 3 halides) and (It exhibits second order kinetics)...
Which of the following statements about an Svl mechanism is (are) true? 4. A. The reaction is fastest with 3° halides. B. The rate of the reaction increases when the solvent is changed from (CHs):C-O to CH&CH:OH C. The identity of the leaving group does not affect the reaction rate. D. Statements (The reaction is fastest with 3° halides) and (The rate of the reaction increases when the solvent is changed from (CHs):C-0 to CH CH OH) are true. E....
12. Label the following reactions as El or E2 * 01 - 0 a . CH CH -- A. A =E1; B=E2 B.A=E1; B=E1 C. A E2: B-EI D. A=E2; B-E2 13. Consider the following exothermic E2 reaction. What rate equation would be observed for this reaction CH, CH CH I + KOC(CH3), CH CH CH2 + KI A. rate k[CHCH:CH-1) B. rate=k[CH,CH:CH:1][K OC(CH.)s] C. rate - [CH,CH:CH=1][K OC(CH);]* D. rate=k[CH,CH:CH-1)^[K OC(CH.):] E. There is not enough information given to...
Multiple Choice: Fill in on scantron sheet with pencil. 1. Which reaction has a positive AG, assuming that entropy changes are negligible compared to enthalpy changes? - Ener- Energy Energy reaction coordinate reaction coordinate reaction coordinate A A B.B C.C
7. Which of the following statements is (are) true about a reaction that follows an Sul mechanism? A. The reaction is fastest with primary alkyl halides. B. The reaction exhibits a one-step mechanism. C. The reaction rate increases as the leaving group ability increases. D. The reaction rate increases as the strength of the nucleophile increases. E. Statements (The reaction rate increases as the leaving group ability increases) and (The reaction rate increases as the strength of the nucleophile increases)...
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
Match the following statements with reaction mechanism
SN1, SN2, E1, or E2. A statement may be true
for one or more mechanisms.
a. The mechanism involves carbocation intermediates. b. The mechanism has two steps. c. The reaction rate increases with better leaving groups. d. The reaction rate increases when the solvent is changed from CH3OH to (CH3)2SO e. The reaction rate depends on the concentration of only the alkyl halide. f. The mechanism is concerted. g. The reaction of CH3CH2Br...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
For the following substitution reactions, choose whether reaction A or B will proceed more quickly. If they will proceed at the same rate, put an equal sign,"=", in the box. Reaction Pair Faster? SN1 or SN2? A: CH3Br + CH30-→ CH3OCH3 + Br- B: CH3Br + CH3OH → CH3OCH3 + Br- + H+ Cl + NH3 NH + Cl + H+ B: Ya + Ho — you +C+++11+ OH + Cl + H+ I + NH3 NH2 +I+H+ SN2 ci...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
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