Chemistry: Post your doubts here!

[1357911]

Can anyone post topical past papers (paper 4) for lattice energy and electrode potential ASAP? Plz?
Thanks in advance!

Lazy! Dhoond kr karo khud..
U r welcome in advance.

 

[goodluckayesha]

Lazy! Dhoond kr karo khud..
U r welcome in advance.

Plz yaar tell me or else link do

 

[1357911]

Plz yaar tell me or else link do

I have to start today janab jee. jab kr loon gi ill tell u... Btw chemistry ke jahan tak mein nei questions kiye hain topical nahi hain. They are all mixed up. Jumbled up. Aik Aik question men do do teen chapters ke questions hain. So be careful when solving.

 

[goodluckayesha]

I have to start today janab jee. jab kr loon gi ill tell u... Btw chemistry ke jahan tak mein nei questions kiye hain topical nahi hain. They are all mixed up. Jumbled up. Aik Aik question men do do teen chapters ke questions hain. So be careful when solving.

Oh god!

 

[salvatore]

Could someone please help me with the following question?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s10_qp_42.pdf
qn no. 1 (iv)

I do not understand how the mechanism is drawn in the marking scheme. In addition, I also don't get why the examiners report has stated that this is an SN2 mechanism. I'll appreciate if someone could help me solve this.

Thanks

 

[Musab100]

product b and e

 

[Musab100]

product b and e

 

[1357911]

Correct, Both of them.

 

[Musab100]

Correct, Both of them.

why its not matching with mark scheme

 

[Musab100]

Correct, Both of them.

https://www.xtremepapers.com/community/attachments/imag0759-jpg.32625/
and this one ???

 

[1357911]

product b and e

Product E is wrong.

 

[Musab100]

y

Product E is wrong.

product E or part e ???

 

[1357911]

y
product E or part e ???

Sorry. Product B

 

[Musab100]

how it is wrong u said its correct

 

[1357911]

how it is wrong u said its correct

That was for optical isomerism plus the cis trans isomerism.

 

[Musab100]

That was for optical isomerism plus the cis trans isomerism.

are both optical and cis trans isomers wrong u said optical is right

 

[salvatore]

Could someone please help me with the following question?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s10_qp_42.pdf
qn no. 1 (iv)

I do not understand how the mechanism is drawn in the marking scheme. In addition, I also don't get why the examiners report has stated that this is an SN2 mechanism. I'll appreciate if someone could help me solve this.

Thanks

I'm re-posting this.. anyone??

 

[danyaljamil]

I'm re-posting this.. anyone??

this is a primary halogenoalkane which always have a SN2 mechanism while undergoing reaction as for the drawing its pretty clear lone pairs shown on the nuclophile attacking the carbon with partial positive and negative on cl the intermediate shown with 5 gropus attached and then cl bond breaking and use curly arrows to show the bonds breaking!

 

[Musab100]

are both optical and cis trans isomers wrong u said optical is right

cis trans

 

[Musab100]

are both optical and cis trans isomers wrong u said optical is right

cis trans