Chemistry: Post your doubts here!

[A star]

may some body plz answer this question for me ?
any explaination is greatly appreciated
"Briefly explain why 2-bromopropane is the main product rather than 1-bromopropane in the reaction of HBr with propene"

is it a past paper ? if yes just state the anti markonikovs rule :3

 

[Thought blocker]

A DOUBT.

Kya che avu apdi book ma ?

 

[Thought blocker]

is it a past paper ? if yes just state the anti markonikovs rule :3

Explain that rule, Briefly is fine.

 

[♣♠ Magnanimous ♣♠]

may some body plz answer this question for me ?
any explaination is greatly appreciated
"Briefly explain why 2-bromopropane is the main product rather than 1-bromopropane in the reaction of HBr with propene"

is it a past paper ? if yes just state the anti markonikovs rule :3

dana xP
well it wasn't my doubt she created thread in help and suggestion but no one answered so i thought let me help her.

 

[A star]

dana xP

u do know the rule right

 

[Thought blocker]

dana xP
well it wasn't my doubt she created thread in help and suggestion but no one answered so i thought let me help her.

 

[Thought blocker]

u do know the rule right

No I dont

 

[♣♠ Magnanimous ♣♠]

u do know the rule right

IDK .

 

[A star]

No I dont

well here goes nothing its As i guess
markonikovs rule " during electrophylic addition of alkenes the hydrogen atoms attach to the carbon atom with the most hydrogen atoms already attached"

 

[Thought blocker]

well here goes nothing its As i guess
markonikovs rule " during electrophylic addition of alkenes the hydrogen atoms attach to the carbon atom with the most hydrogen atoms already attached"

wow, ty.

 

[syed1995]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s04_qp_4.pdf Q2c(i) i get the answer but cant we state the size of carbon atom being smaller than silicon as a valid reason

Yes in a sense you can, however the better reason will be that C does not have empty D orbitals. just remember this one line statement it won't kill you

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s05_qp_4.pdf 3 a (i) how do we know that the reaction has a higher activation energy?

This my friend is indeed a good question. I would like to know the answer to this as well.. lol How can we determine the Ea? does endothermic reaction show high Ea reactions? or is it the magnitude? no clue.

I think the answer to this comes from the fact that reaction 1 needs to be heated to a higher temperature.. yaar wo AS wala jo tha.. Boltzman Temeperature wala # of particles/energy graph. Increasing temperature increases the number of particles with enough activation energy.

 

[syed1995]

well here goes nothing its As i guess
markonikovs rule " during electrophylic addition of alkenes the hydrogen atoms attach to the carbon atom with the most hydrogen atoms already attached"

It is in our course? haha didn't knew until today!

 

[♣♠ Magnanimous ♣♠]

It is in our course? haha didn't knew until today!

loll me too..

 

[Elena Gilbirt]

can any1 help me out plz? i need da As n A2 definitions

 

[hellangel1]

http://www.chemguide.co.uk/analysis/nmr/highres.html
http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/nmr/nmr1.htm

Thank you

 

[Haya Ahmed]

look at this

http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w13_qp_23.pdf

Q2 d (ii) .. why the answer is Positive not negative ??

 

[♣♠ Magnanimous ♣♠]

Thank you

 

[A star]

It is in our course? haha didn't knew until today!

not directly that why i asked him if it was from past papers. You just use it to form compunds after electrophylic addition reactions :3

 

[♣♠ Magnanimous ♣♠]

well my signature is awesome like yours.

not directly that why i asked him if it was from past papers. You just use it to form compunds after electrophylic addition reactions :3

 

[A star]

Yes in a sense you can, however the better reason will be that C does not have empty D orbitals. just remember this one line statement it won't kill you



This my friend is indeed a good question. I would like to know the answer to this as well.. lol How can we determine the Ea? does endothermic reaction show high Ea reactions? or is it the magnitude? no clue.

I think the answer to this comes from the fact that reaction 1 needs to be heated to a higher temperature.. yaar wo AS wala jo tha.. Boltzman Temeperature wala # of particles/energy graph. Increasing temperature increases the number of particles with enough activation energy.

second part you lost me on I think