The strongest nucleophile is : a) fluorine anion b) chlorine anion c) bromine anion d) iodine anion
The strongest nucleophile is : a) fluorine anion b) chlorine anion c) bromine anion d) iodine...
The electron affinities (as delta H values) of chlorine, bromine, and iodine (as gaseous atoms) are -349, -324, and -295 kJ/mol. Based on the electron affinity trend, what would you expect the electron affinity of fluorine (gaseous atom) to be? The electron affinity of fluorine is actually -328 kJ/mol. Suggest an explanation for the difference predicted and actual.
4) Which of the halogens below undergoes radical halogenation with ethane most rapidly? A) bromine B) pyridine C) iodine D) fluorine E) chlorine
Identify the strongest nucleophile. a. HO- b. I c. NaOCH2CH3 d. CH3CH2OCH2CH3
5) Iodine is a better leaving group than bromine. But iodine is a better nucleophile than bromine. Why is that? Introduction Alkyl halides can be prepared from alcohols by reactions with hydrogen halides (HCI, HBr, or HI) via nucleophilic substitution. In this type of reaction, the nucleophile displaces a leaving group from a carbon atom of an organic substrate (here the alcohol once protonated). Both electrons of the new bond to the carbon are provided by the nucleophile while the...
I am having trouble with part e. d) Rank the three halogens: iodine, bromine and chlorine, in order from best leaving group to worst? e) What does this tell you about the leaving group ability going from top to bottom in a group on the periodic table? Is this the same trend you found for the SN2 reactions
9. Chlorine, bromine and iodine all react with alkenes such as ethene in an addition reaction. (a) Write the equation for the bromination of ethene, and name the product. (b) Explain why this is called an addition reaction. (c) Describe what you would see if you bubbled ethene through a solution of bromine in an organic solvent such as hexane. 10. If you use a permanganate test to distinguish between cyclohexane and cyclohexene, in which would the purple color of...
Assigned as (Homework O H7.28-Level 2 Which halogen anion is the strongest nucleophile in a polar aprotic solvent such as DMF (dimethylfomamide)? 1) F 2) CI3) Br 4) O A 1) OC3)
In organic chem we did an experiment called the addition of bromine to an alkene. We added bromine to trans-stilbene to create stilbene dibromide. The source of bromine was from a rapid equilibrium between pyridium tribromide and pyridium hydrobromide and bromine. The non-polar molecule of bromine became polarized when it approached the pi bond of the alkene and then is transferred to the alkene to create a cyclic bromonium ion and a bromide anion. One of the bromide anions attacks...
5) Which species' outermost electron experiences the largest effective nuclear charge? a. lodine b. Bromine c. Chlorine d. Fluorine
How would you draw the most stable conformation of trans-1-chloro-4-fluorocyclohexane? O Axial chlorine on C-1, Axial fluorine on C-4 o Axial chlorine on C-1, Equatorial fluorine on C-4 O Equatorial chlorine on C-1, Axial fluorine on C-4 O Equatorial chlorine on C-1, Equatorial fluorine on C-4 O Choices b and c are both correct O Choices a and d are both correct Submit Answer Tries 0/1 How would you draw the most stable conformation of trans-1-bromo-4-fluorocyclohexane? O Axial bromine on...