Overall transformation : Ar-H to Ar-R
Named after Friedel and Crafts who discovered the reaction in 1877.
Reagent : normally the alkyl halide (e.g. R-Br or R-Cl) with aluminum trichloride, AlCl3, a Lewis acid catalyst.
The AlCl3 enhances the electrophilicity of the alkyl halide by complexing with the halide.
Electrophilic species : the carbocation (i.e. R +) formed by the "removal" of the halide by the Lewis acid catalyst
The reactive electrophile, the carbocation is prone to rearrangement to a more stable carbocation which will then undergo the alkylation reaction.

Friedel-Crafts reactions are limited to arenes as or more reactive than mono-halobenzenes
Other Lewis acids such as BF3, FeCl3 or ZnCl2 can also be used
Other sources of carbocations can also be used:
from loss of water from alcohols treated with acid such as H2SO4
from the protonation of alkenes by acid such as H2SO4
Alkylation products can also be obtained by the reduction of Friedel-Crafts acylation products
Greenhouse gases are the number<span> one </span>cause<span> of </span>global warming<span>. so im guessing none of the above sorry thats all i can say :( but it might be either c. or b. not sure though correct me if im wrong :)</span>
I believe the answer is D<span>. they increase the activity of brain regions responsible for planned behavior.
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stimulants produce more activity in parts of the brain such as the basal ganglia, frontal lobe, and thoughtful thought. This increase the likelihood for a person focusing all of his/her brain activity to one single goals and become more productive throughout the day,
Answer: Positive
Explanation:
Ruth was strong and her death will promote more women into the Goverment.
Answer: Nagging should not be done
Explanation: Nagging is the activity in which a person starts to find the fault in another person in persistently.This type of behavior in continuous way can lead to irritate or annoy the other person.
The case mentioned in the question also describes about the nagging behavior showed by Bobbi towards her friend Charla. Bobbi is continuously finding mistake in behavior of Charla that she does not take enough stand for herself in the office. Thus, Charla is getting irritated with this act.
