Chemistry guides for +2 students

Aja ko topics chai  Haloalkane;


 important questions from this topics are---

Very short ques....-- 

1-a haloalkane @ reacts with aq.Naoh to give isopropyl alcohol.what major product would you get when @ is heated with Na in presense of dry ether?

2-give the major products in the following questions:
  i=      Br
          |      Na/ether
      CH3-CH-CH3---------->

  ii=            LiAlH4
      CH3-CH3-Br---------->

3-Give the IUPAC name of X and Y in the following reactions.
                 AgCN       LiALH4
    CH3-CH2-Br----------->X------------>Y

4-Starting from idomethane,how would you prepare:
  i)ethane  ii)ethene

5-write down the structure of secondary haloalkane of c3H7X.
  What happens when the secondary haloalkane is heated with Na in presense of dry ether ?

6-Give the IUPAC name of X and Y in the following reactions.
                 AgCN       LiALH4
    CH3-CH2-I----------->X------------>Y

7-Convert 1-bromopropane to 2- bromopropane.

8-convert 1-chloropropane to 2- chloropropane

9-Identify the major product A and B in the following reations:
          Mg           H20  
  C2H5Br----------->A----------->B

10- Identify the major product A and B in the following reations:
            alc.KOH      i) O3  ii)(Zn/H20)
 CH3-CH2-Br---------->A----------------------->B

11-What happens when chlorofom is heated with silver powder?

12-Write the avction of monohydroxy benzene with chloroform in presense of alc.NaOH.

13-A primary haloalkane(X),if allowed to reacts with KCN yields a compounds (Y),which on hydrolysis give propanoic acids.
   Identify X and Y.
14-Convert bromoethane into ethyne.

15-Why does chloroform not give white precipitate with silver nitrate?

16-Give uses of chloroform.
17- why is chloroform stored in a dark brown bottle?


SHORT QUESTION;
1-Describe laboratory method of preperation of chloroform.How does chloroform reacts with acetone?

2- Give the chemical reactions for the preparation of chloroform from ethanal.what happens when it is heated with silver powder?
  
3-How would you obtain:
  a)ethane from bromoethane
  b)ethyne from chloroform
4-Give reation to convert A into ethanoic acid.

5- write ANY three methods of preparations of Iodoethane.What happens when Idoethane is heated with
  i)Sodium in present of dry ether
  ii)alc.NaOH
6-Starting from chloroform,how would you prepare:
 i)ethyne   ii)methane  iii)chlopropicrin  iv)carbonyl chloride  v)chloretone

7-Describe the lab preparation of ethyl iodide from ethyl alcohol and PI3 or red phosphorous and iodine.

8-what happens when chloroform is allowed to react with NaOH solution?


LONG QUESTIONS:
Important questions are;;;
a)lab p[reparation of chloroform
b)Inductive effects
c)wurtz reactions
d)markkovnikoffs rule

ans will be in next post