Homework Answers
Nucleophiles are those who can donate a pair of electron to electrophile to make chemical bond. As they can donate electron so they can be also called as Lewis bases. So all nucleophiles are Lewis bases.
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Which of the following statements is CORRECT? All electrophiles are positively charged species. O All nucleophiles...
Which of the following statements is incorrect description of electrophiles? Question 1 options: Electrophiles contain large...
Which of the following statements is incorrect description of electrophiles? Question 1 options: Electrophiles contain large electron density. Combination of nitric acid and sulfuric acid can generate a strong electrophile. Electrophiles lack electron density. Electrophiles are attracted to negatively charged atoms. Question 2 (1 point) 3-Nitro methyl benzoate is more reactive toward electrophilic aromatic substitution reactions than methyl benzoate. Question 2 options: True False Question 3 (1 point) Predict the carbon atom that carries greatest partial negative charge.
9. Which of the following statements is FALSE of electrophiles and nucleophiles? A) Anionic molecules tend...
9. Which of the following statements is FALSE of electrophiles and nucleophiles? A) Anionic molecules tend to be nuclophiles, and cationic molecules tend to be electrophiles B) It is possible for the same molecule to act as an electrophile in some reactions, and a nucleophile in other reactions C) Carbocations are very strong electrophiles D) It is possible for a weak nuclophile to participate in a reaction E) Typically, a double headed curved arrow will move towards a nucleophile 10....
Which of the following statements correctly describes the general reactivity of alkynes? A) An alkyne is...
Which of the following statements correctly describes the general reactivity of alkynes? A) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile.B) The σ bonds of alkynes are higher in energy than the π bonds and are thusmore reactive. C) Unlike alkenes, alkynes fail to undergo electrophilic addition reactions. D) Alkynes are generally more reactive than alkenes. E) Alkynes react as electrophiles, whereas alkenes reacts as nucleophiles.
You touch a metal sphere which is positively charged. Which of the following is a correct...
You touch a metal sphere which is positively charged. Which of the following is a correct description of what happens next? (Select all options that you think are correct) 1. As opposite charges attract and your body is a reasonably good conductor, some negative charge (if mobile) from your body is attracted to the metal and reduces the net positive charge on the metal. In the process you acquire positive charge. 2. As like charges repel and your body is...
Question 17 3.33 pts Which of the following statements related to Sw1 reactions is not true?...
Question 17 3.33 pts Which of the following statements related to Sw1 reactions is not true? The SNireaction can be described as a heterolytic attack between solvent on alkyl halide followed by nucleophilic attack. Carbocations are electrophiles The charged carbon atom of a carbocation has an unfilled valence shell Nucleophiles are Lewis acids Question 18 3.33 pts The reaction of methyl iodide with azide (N) proceeds by an S2 mechanism. What is the effect of doubling the concentration of azide...
Question 6 Which of the following statements regarding a protein with 4 domains must be true?...
Question 6 Which of the following statements regarding a protein with 4 domains must be true? A protein with 4 domains must have 4 different kinds of secondary structures. O A protein with 4 domains must be composed of 4 polypeptide chains. A protein with 4 domains must have 4 regions that fold independently. A protein with 4 domains must have a quaternary structure. Question 7 Histone proteins are typically... o rich in disulfide bonds O composed of a random...
How would you solve this question? confused about how SN1 and E1 reactions work 1) The...
How would you solve this question? confused about how SN1 and E1
reactions work
1) The following reactions have all the same electrophiles but different nucleophiles. Thus the rate of the following reactions is dependent upon the nucleophilicity of the nucleophile. In the following pairs of reactions determine which is faster x) or y) and choose the explanation and Potential Energy-Reaction Coordinate diagram given below to explain why. Use the bottom table below to answer the question. H EtOH +...
For the following list of chemical species, which statement is correct regarding the Lewis acids and...
For the following list of chemical species, which statement is correct regarding the Lewis acids and Lewis bases present? H2S, Mg2+, cr, BF3 , BH3 , OH", NH3, NF3, PO43-, H2, Cu2+, Co3+ Pb2+, CH4, Cut, Li, Ba, He, F O A. answer not listed 7 Lewis Acids (Mg2+, BF3 , CH4, BH3 , Cu2+, Co 3+, Pb2+ ) and OB. 7 Lewis Bases (H2S, cr, OH", NH3, NF3, Cut, Li) 5 Lewis Acids (Mg2+, BH3 , Cu2+, CO3+, Pb2+)...
u. J P 1 7. Which of the following statements related to Syl reactions is not...
u. J P 1 7. Which of the following statements related to Syl reactions is not true? a. The Syl reaction can be described as a heterolytic bond cleavage followed by nucleophilic attack b. Carbocations are electrophilic c. The charged carbon atom of a carbocation has an unfilled valence shell d. Nucleophiles are Lewis acids
Question 4 1 pts Which of the following statements is true? Carbonyl compounds are Lewis acids...
Question 4 1 pts Which of the following statements is true? Carbonyl compounds are Lewis acids because the oxygen has a partial negative charge and can donate electrons. Carbonyl compounds are Lewis acids because the double bond has electron density and can donate electrons. Carbonyl compounds are Lewis acids because the carbon has a partial positive charge and can accept electrons Carbonyl compounds are Lewis bases only.
9. Which of the following statements is FALSE of electrophiles and nucleophiles? A) Anionic molecules tend to be nuclophiles, and cationic molecules tend to be electrophiles B) It is possible for the same molecule to act as an electrophile in some reactions, and a nucleophile in other reactions C) Carbocations are very strong electrophiles D) It is possible for a weak nuclophile to participate in a reaction E) Typically, a double headed curved arrow will move towards a nucleophile 10....
Question 17 3.33 pts Which of the following statements related to Sw1 reactions is not true? The SNireaction can be described as a heterolytic attack between solvent on alkyl halide followed by nucleophilic attack. Carbocations are electrophiles The charged carbon atom of a carbocation has an unfilled valence shell Nucleophiles are Lewis acids Question 18 3.33 pts The reaction of methyl iodide with azide (N) proceeds by an S2 mechanism. What is the effect of doubling the concentration of azide...
Question 6 Which of the following statements regarding a protein with 4 domains must be true? A protein with 4 domains must have 4 different kinds of secondary structures. O A protein with 4 domains must be composed of 4 polypeptide chains. A protein with 4 domains must have 4 regions that fold independently. A protein with 4 domains must have a quaternary structure. Question 7 Histone proteins are typically... o rich in disulfide bonds O composed of a random...
How would you solve this question? confused about how SN1 and E1
reactions work
1) The following reactions have all the same electrophiles but different nucleophiles. Thus the rate of the following reactions is dependent upon the nucleophilicity of the nucleophile. In the following pairs of reactions determine which is faster x) or y) and choose the explanation and Potential Energy-Reaction Coordinate diagram given below to explain why. Use the bottom table below to answer the question. H EtOH +...
For the following list of chemical species, which statement is correct regarding the Lewis acids and Lewis bases present? H2S, Mg2+, cr, BF3 , BH3 , OH", NH3, NF3, PO43-, H2, Cu2+, Co3+ Pb2+, CH4, Cut, Li, Ba, He, F O A. answer not listed 7 Lewis Acids (Mg2+, BF3 , CH4, BH3 , Cu2+, Co 3+, Pb2+ ) and OB. 7 Lewis Bases (H2S, cr, OH", NH3, NF3, Cut, Li) 5 Lewis Acids (Mg2+, BH3 , Cu2+, CO3+, Pb2+)...
u. J P 1 7. Which of the following statements related to Syl reactions is not true? a. The Syl reaction can be described as a heterolytic bond cleavage followed by nucleophilic attack b. Carbocations are electrophilic c. The charged carbon atom of a carbocation has an unfilled valence shell d. Nucleophiles are Lewis acids
Question 4 1 pts Which of the following statements is true? Carbonyl compounds are Lewis acids because the oxygen has a partial negative charge and can donate electrons. Carbonyl compounds are Lewis acids because the double bond has electron density and can donate electrons. Carbonyl compounds are Lewis acids because the carbon has a partial positive charge and can accept electrons Carbonyl compounds are Lewis bases only.
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