Question

please give correct answer to these 5 questions with explanations, thankyou

Alkenes are nucleophiles that can undergo electrophilic addition. Which of the following best describes the nucleophilic nature of alkenes? Select one a. The TT bond is localised above and below the C-C o bond, and the TT electrons are relatively far away from the nuclei and are loosely bound b. The bond is localised above and below the C-CT bond, and the electrons are relatively far away from the nuclei and are loosely bound c. The bond is localised above and below the C-Cobond, and the TT electrons are relatively far away from the bond and are loosely bound d. The TT bond is localised above and below the C-C o bond, and the TT electrons are relatively close to the nuclei and are loosely bound The o bond is localised above and below the C-CT bond, and the electrons are relatively close to the nuclei and are loosely bound Predict the product that would form for the electrophilic reaction below in the presence of H20 Consider the electrophilic reaction of H-Br to but-2-ene. Arrange the following events in order 1. The bromide ion quickly attacks the cationic center II. The alkene abstracts a proton from the HB III. The final product is formed, where H-Br has been added across the double bond IV. A carbocation and bromide ion are generated HH C=C HH + Br-Br Select one: Select one: a. I, II, III, and IV b. II, IV, I and III c. II, I, IV, and III d. III, IV, I, and I e. III, I, I, IV HH oo H-C-C-H НО Br HH ob H-C-C-H HO OH Predict the correct product for the electrophilic addition reaction below. + Br-Br ALO3E01 Predict the product of the following reaction: Br Br Select one: Select one: O a HH HH dH-C-C-H Br Br Br OH CEC HH Ob Od

Answer 1

O Alkene's are nucleophiles that con undergo electro phelic addition. becaused ay The T bond is localised above and. 12 below the c-co bond and Tho electron are reletively for away frow from the nucled and are loosely bound,

Preaction below polto- of the elecrophilic addilan a + Br-Br. addition of Bry to trans. butene gine. mese di bromo butane. +Br-Br hence (dis correct

0 conseder the electrophelic reaction of HBr. to B but 2-ene Arrange the following events in order 1st step The alkene asbetobe bracta proton from HBr. 2nd slep A carbocation and bromide ion are generated 3rd step :- The bromide ion attakks Cattonic center, the slep: - The e final prodent formed where A Br. has been added across the double bond. CH₃ -CH=CH-CH₂ CH₂ - CH₂ - CH-CH3 CH₂ - CH₂ - CH CH. B7 Lence (b) option is correct.

6 H₂O + Br Ik Ho Br Ho Br + H Br. altocks. It adtack like Hence (a) is correct :