Which of the following are true about the use of aluminum chloride in the Friedel-Crafts acylation reaction? Note that there may be more than one correct answer.

Question

Aluminum chloride removes chloride from acetyl chloride to generate a nucleophile that can attack the ring of toluene
aluminum chloride removes chloride from acetyl chloride to generate an electrophile that can attack the ring of toluene
Aluminum chloride removes a proton from toluene and makes it more vulnerable to electrophilic attack.
Aluminum chloride is a strong electrophile that attacks the ring
Aluminum chloride is violently destroyed when hydrochloric acid is added
Aluminum chloride reacts with the acylium ion to form aluminum metal and chlorine gas. This must be done in the fume hood.

Answer 1

https://en.wikipedia.org/wiki/Friedel%E2%80%93Crafts_reaction