4) (marks-1.5) Please answer the following as TRUE or FALSE in the space provided to the...
5) (marks = 3) Please answer the following as TRUE or FALSE in the space provided to the left of each statement (0.5 marks each). True/False All tertiary alkyl halides only participate in SN 1 reactions. CH30 is a better nucleophile for an SN2 reaction than CH3S when in methanol. The relative stability of carbanions is as follows: (most stable) 1° >2 > 30 (least stable) Unlike other alkyl halides (CI, Br, 1), alkyl fluorides do not participate in substitution...
True/False Indicate whether the statement is (A) true or (B) false. In the most stable conformation of a cyclohexane, it is preferable to have as many substituents in the axial position as possible. 2. 3. Syl reactions may involve a carbocation rearrangement. Tertiary alkyl halides are more likely to participate in an Sy2 reaction. 4. Cis-1,3-dimethyleyclohexane and trans-1,3-cyclohexane are enantiomers. 5. 6. An Sy2 reaction results in inversion of the relative configuration. The rate of an SNl reaction can be...
Total Marks 53 Q1. True / False 1. Tertiary hydrogen is more reactive than secondary hydrogen towards chlorination. 2. Tertiary alcohol is less reactive towards HX than secondary alcohol. 3. Loss of electron density by carbon is called reduction. 4. SN2 is a twostep reaction. 5. In SN2 the stereochemistry at C is not inverted. 6. Smaller activation energy makes the reaction slow. 7. Bulky substrate favors the rate of SN? reaction. 8. Neutral nucleophiles are more favorable for SN...
please help!!! are my answers right???
True Larger atoms are better nucleophiles due to polarizability. False The identity of the nucleophile affects the rate of an SN1 reaction. False SN2 reactions proceed via frontside attack. True Bimolecular reactions tend to be stereoselective. True SN2 reactions invert all stereocenters in a haloalkane. False Cl-, OH-, and H-are good all leaving groups. True Good bases tend to be good nucleophiles arch True Branching adjacent to a reacting carbon slows SN2 reactions due...
Determine if each of the following statements is true or false 1 Larger atoms are better nucleophiles due to polarizability. 2 The identity of the nucleophile affects the rate of an SN1 reaction. 3 SN2 reactions proceed via frontside attack. 4 Bimolecular reactions tend to be stereoselective. 5 SN2 reactions invert all stereocenters in a haloalkane. 6 Cl-, OH-, and...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what effect on the reaction rate would result from simultaneously doubling the concentrations of both butyl bromide and hydroxyl ion No effect (B)It would double the rate (C)it would increase the rate six times (D) It would increase the rate four times. 2. Which alky halide would you expect to undergo SN1 hydrolysis most rapidly? (A) (CH3)3C-I (B) (CH3)3C-Br (C) (CH3)3C-Cl (D) (CH3)3C-F 3....
please answer these questions 1: Which of the following is true for the reaction of (1R, 2R)-1-tert-butyl-1-fluoro-2-methylcyclohexane with potassium hydroxide? a: The product is (E)(6R)-1-tert-butyl-6-methyl-1-cyclohexene b: The product is (Z)(6R)-1-tert-butyl-6-methyl-1-cyclohexene c: The product is (Z)(6S)-1-tert-butyl-6-methyl-1-cyclohexene d: The product is (E)(6S)-1-tert-butyl-6-methyl-1-cyclohexene 2: Which of the following is not true for regioselective reactions? a: Generally, the selectivity lies to toward the Saytzeff product in elimination reactions. b: In a regioselective reaction, there is one product that predominates. c: The transition states of...
true and false propositions with quantifiers. Answer the following questions in the space provided below. 1. For each proposition below, first determine its truth value, then negate the proposition and simplify (using De Morgan's laws) to eliminate all – symbols. All variables are from the domain of integers. (a) 3.0, x2 <. (b) Vr, ((x2 = 0) + (0 = 0)). (c) 3. Vy (2 > 0) (y >0 <y)). 2. Consider the predicates defined below. Take the domain to...
1. Consider the three molecules below to answer the following questions. Circle TRUE or FALSE at the end of each question (0.5 points each). Molecule A Molecule C Molecule B A. The rate of EAS with Molecule B will be faster than the rate of EAS with Molecule A (assume MAJOR product formation). TRUE or FALSE B. Molecule C will undergo nitration to yield a meta-product that is the MAJOR product. TRUE or FALSE c. The rate of meta-product formation...
2 6, 9、19/ 1,12 '12,13,16,16, 16,18,3‘ = 12.5 4 IQR=46 Question #1 (15 Marks) a) (8 Marks) Answer the following questions with True or False. 1) Every basic solution in the assignment problem is necessarily degenerate. 2) The assignment problem cannot be solved using the transportation technique. maximum or minimum. If a single-variable function has two local minima, it must have at least one local 4) maximum. 5) The Golden Section Search method gives better results than the Fibanocci Search...