doubt

25 Answers

106
Asish Mahapatra ·

then i dont know...... yeh agar match the column mein aaya hai toh main bhi wohi tick karta jo tumne kiya hai.

1
vector ·

tx

1
greatvishal swami ·

well remember this aquous KOH will perform substitution

& alcoholic will perform elimination

* some exceptions r there but this is the simple generalisation

1
vector ·

nothing big was thinking sumthing else tis cleared now

3
msp ·

substitution and elimination can occur under this condn but the major product is the substitution product.elimination product is favourd due to the more basic OH- ion. can u pls elobrate wat is ur doubt richa.

1
Soham ·

since KOH is a strong base........elimination reaction will take place...in addition to the major substitution product.

1
vector ·

in 1 substitution is major na

1
greatvishal swami ·

pls b a bit clear dear

in 1 i m saying that sustitution wil b major event

if u r trying to say that y i mnot considering substitution in 2 then the compound 2 is 10 carbocation so substitution will be too small to b noteciable ( due to sn1)

and sn2 will not take place as its conditions r not provided

1
vector ·

bt den why did nt u take substitution in account in1

1
greatvishal swami ·

richa in 2nd one u r using alcoholic KOH so it will always undergo elimination

but for 1 due to 3 degree carbocation and aqueous KOH it will show substitution in maror with some elimination as elimination always competes with substitution

1
Terminator ·

[1][1][1]........[7][7][7].........

1
vector ·

@sky 2nd is doing elimination

1
vector ·

ne views

24
eureka123 ·

i think ur doubt should be why 1??[12]

1
vector ·

@asish have a look

1
vector ·

it s a match d colum

106
Asish Mahapatra ·

yes the major product is substitution one..... elimination one is almost not formed..... btw for 2nd question is it asking major product or something?? anyway elimination is negligible in this case

1
vector ·

d ans of question is 1 ,2 but dis question is accompnaid by another q whose ans is elimination only

106
Asish Mahapatra ·

i cudnt get u.... what is the actual answer of the question?
(1),(2) or only (1)

1
vector ·

but d q ch3-ch2-x(alc koh ) ans is elimination only

106
Asish Mahapatra ·

yes they should be considered provided the rates of reaction of substitution and elimination are comparable...... but in this case elimination is negligible compared to substitution but it definitely occurs.

106
Asish Mahapatra ·

yes aq. KOH undergoes substitution as major reaction..BUT substitution and elimination ALWAYS occur simultaneously whatever be the rates of reaction.

1
vector ·

@ashish acc to u whenever sub ll be ans elimination ll also be considered

1
vector ·

no eureka my doubt is why 2

106
Asish Mahapatra ·

it is a fact that substitution and elimination always occur simultaneously whatever be the rates of the reaction. Even if elimination or substitution is very slow.....it will definitely take place.

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