11) Indicate whether the statement about nucleophilicity is or True or False: a) A species with a...
11) Indicate whether the statement about nucleophilicity is or True or False:
a) A species with a negative charge is a stronger nucleophile than a similar neutral species. (True / False)
b) In particular, a base is a stronger nucleophile than its conjugate acid. (True / False)
c) Nucleophilicity decreases from left to right in the periodic table, following the increase in electronegativity from left to right. (True / False)
d) The more electronegative elements have more tightly held nonbonding electrons that are less reactive toward forming new bonds. (True / False)
e) Nucleophilicity increases down the periodic table, following the increase in size and polarizability, and the decrease in electronegativity. (True / False)
Homework Answers
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11) Indicate whether the statement about
nucleophilicity is or True or False:
a) A species with a...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become cations and form ionic bonds with anions. 2. Ionic bonds tend to form between elements on the left side of the Periodic Table, and covalent bonds tend to form between elements on the right side of the Periodic Table. 3. Electronegativity is a measure of an atom's attraction for the electrons it shares in a chemical bond with another atom. 4. Fluorine, in the...
Classify each statement about effective nuclear charge, Zeff, as true or false. True False Effective nuclear...
Classify each statement about effective nuclear charge, Zeff, as true or false. True False Effective nuclear charge is dependent on the number of electrons present in an atom. In a N atom, a ls electron has a greater Zer than a 2s electron. Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge. Als electron in a B atom has a smaller Zeff than a ls electron in a...
Classify each statement about effective nuclear charge, Zeff, as true or false Effective nuclear charge is...
Classify each statement about effective nuclear charge, Zeff, as true or false Effective nuclear charge is dependent on the number of electrons present in the atom In a Be atom, a 1s electron has a greater Zeff than a 2s electron Across a period, as Zeff increases atomic size decreases Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge A 1s electron in a Be atom has a...
U) Indicate if each statement below is true or false (on statement below is true or...
U) Indicate if each statement below is true or false (on statement below is true or false (one error allowed) (4.5 points na 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in Solubility of gases in water increase as the solution temperature increases woments in group 2A show a tendency to lose 2 electrons and become positively charged-2 d) Oxygen is more electronegative than sulfur e) When dissolving 9.0 g NaCl within one liter of...
please help!!! are my answers right??? True Larger atoms are better nucleophiles due to polarizability. False...
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...
24. Which of the following statements is true? the bond order decreases, the bond strength increases,...
24. Which of the following statements is true? the bond order decreases, the bond strength increases, and the bond length increases s the bond order increases, the bond strength increases, and the bond length decreases b. A c. As the bond order increases, the bond strength decreases, and the bond length decreases d. As the bond order decreases, the bond strength decreases, and the bond length decreases e. None of the above is true 25. In which pair of compounds...
Part 1.) Select all of the correct statements about reaction rates from the choices below. 1....
Part 1.) Select all of the correct statements about reaction rates from the choices below. 1. The lower the rate of a reaction the longer it takes to reach completion. 2. As a reaction progresses its rate goes up. 3. Catalysts decrease reaction rates. 4. A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant. 5. Reaction rates increase as concentrations of homogeneous catalysts increase. 6. The higher the rate of a...
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be...
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be effective, they must be present at the same concentration as their substrate A. True B. False 13. They increase the equilibrium constant for the reaction, thus favoring product format A. True B. False 14. They increase the rate at which substrate is converted to product A. True B. False 15. They ensure that all substrate is converted to product. A. True B. False...
Briefly explain and illustrate whether the following statement is true or false: If, over time, the...
Briefly explain and illustrate whether the following statement is true or false: If, over time, the demand curve for a product shifts to the right by more than the supply curve does, the equilibrium price will rise and the equilibrium quantity will increase.
8) indicate if each statement below is true or false (one emror allowed) (4.5 points) a)...
8) indicate if each statement below is true or false (one emror allowed) (4.5 points) a) In a 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in water increase as the solution temperature increases c) Elements in group 2A show a tendency to lose 2 electrons and become positively charged -2 d) Oxygen is more electronegative than sufur e) When dissolving 9.0 a NaCI within one liter of water the solution is 0.9% ) An...
Classify each statement about effective nuclear charge, Zeff, as true or false. True False Effective nuclear charge is dependent on the number of electrons present in an atom. In a N atom, a ls electron has a greater Zer than a 2s electron. Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge. Als electron in a B atom has a smaller Zeff than a ls electron in a...
U) Indicate if each statement below is true or false (on statement below is true or false (one error allowed) (4.5 points na 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in Solubility of gases in water increase as the solution temperature increases woments in group 2A show a tendency to lose 2 electrons and become positively charged-2 d) Oxygen is more electronegative than sulfur e) When dissolving 9.0 g NaCl within one liter of...
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...
24. Which of the following statements is true? the bond order decreases, the bond strength increases, and the bond length increases s the bond order increases, the bond strength increases, and the bond length decreases b. A c. As the bond order increases, the bond strength decreases, and the bond length decreases d. As the bond order decreases, the bond strength decreases, and the bond length decreases e. None of the above is true 25. In which pair of compounds...
Indicate whether each of the following statements about enzymes is true or false. (Q12- 12. To be effective, they must be present at the same concentration as their substrate A. True B. False 13. They increase the equilibrium constant for the reaction, thus favoring product format A. True B. False 14. They increase the rate at which substrate is converted to product A. True B. False 15. They ensure that all substrate is converted to product. A. True B. False...
8) indicate if each statement below is true or false (one emror allowed) (4.5 points) a) In a 30.97g of phosphorous there are 6.022x10 atoms of phosphorous b) Solubility of gases in water increase as the solution temperature increases c) Elements in group 2A show a tendency to lose 2 electrons and become positively charged -2 d) Oxygen is more electronegative than sufur e) When dissolving 9.0 a NaCI within one liter of water the solution is 0.9% ) An...
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