rxns in alkanes

1)Acetic acid,when reacts with excess of HI in presence of red phosphorous gives___

2)wat is the product obtained ,when ter-butyl chloride, on reaction with Na metal _______

3)Reduction of propanol with HI and red P yields ____

please reply with reasons and tx in advance

21 Answers

24
eureka123 ·

ya got it now...........wurtz reaction does not take palce here..becoz its tertiary halide............and tertairy halides dont participate in wutrz reaction due to least stable carbanion..............i dont know why i didnt get that before......[2]

39
Dr.House ·

then ok dude. sorry to u.

21
tapanmast Vora ·

OH yah,

and @mathematician
I had read the questn as red P, I2 which results in Hell Volhard Zelhinski reactn..... otherwise it was obvious ethane!!!!

39
Dr.House ·

so now i think third one also becomes obvious.

39
Dr.House ·

tapanmast i say u better have a gud look at organic once again yaar, u r having many conceptual flaws.

by the way the first one is obviousle ethane. red P + HI is a famous reducing agent. not only carboxylic acids but it also reduces aldehydes and ketones into coresponding alkanes.

3
msp ·

kk da

24
eureka123 ·

u r wrong in first step only.......e attacks not Na+....i suppose...[12]

3
msp ·

oops eureka can u check my mechanism.

24
eureka123 ·

ohhh...[3]
R3-C-X->R3-C-.......

formed becoz a free radical accepts elcetron

3
msp ·

does carbanion is the intermediate in wurtz reaction.

wont the free radical will be the intermediate

3
msp ·

1) ethane

2) isobutylene

3) propane

24
eureka123 ·

3) Reduction reaction.....propanol reduced to propane..[1]

21
tapanmast Vora ·

Sankar now is ans 1 correct????

can u post da answers ......

3
msp ·

both da according to the buk.

but according to me he is correct for the 2nd question

24
eureka123 ·

which ans of tapan is rong??????????????1 or 2????

3
msp ·

eureka123 ok i have left the solvent for the 2nd question it is given as ether da

guys i want the explanations pls give.

but tapanmast u have given rong ans according the buk da but u and eureka were rite for the 3rd question

24
eureka123 ·

But dry ether is not given...........so how can Wurtz reaction take place?????????[7]

21
tapanmast Vora ·

2reasons :
1) No other produvt seems likely ([3])

2 moles of tert butyl alc. + 2 Na ---> product + 2NaCl.....

Sankara can u confirm if my ans's rite or not???

24
eureka123 ·

tapan plzzzz explain 2 soln......

21
tapanmast Vora ·

1) CH2ICOOH [ *EDITED]

2) (CH3)3-C-C-(CH3)3

3) wat euereka said....

24
eureka123 ·

2)Is there any solvent???[7]
I think its difficult to predict otherwise.....[2]

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