Chemistry, Physics, Biology: Post your doubts here!

[Ayesha Asif333]

For all those students taking Edexcel IAL feel free to post your doubts and queries for the science subjects in here!
Tho i might be the last one here to help but i am hopeful other members will
Happy studying and Good luck for the exams!

 

[fatimaw]

o i already did igcse chem and i am going to to edexcel as chemistry
any tips !!!?
and some websites....for notes and also videos that help explain some topics

can u guys summerize how it is like to do as chem edexcel
thanks a lot!!!!!!!!!!!!!1

 

[Ayesha Asif333]

o i already did igcse chem and i am going to to edexcel as chemistry
any tips !!!?
and some websites....for notes and also videos that help explain some topics

can u guys summerize how it is like to do as chem edexcel
thanks a lot!!!!!!!!!!!!!1

Same help required here ^
Btw when exactly will u be appearing for the exams

 

[fatimaw]

Same help required here ^
Btw when exactly will u be appearing for the exams

may june 2018

 

[Ayesha Asif333]

how do we solve part e?

 

[sweetiepie94]

https://www.xtremepapers.com/community/threads/some-different-notes-website-are-available.31232/ hope this helps

 

[Ayesha Asif333]

https://www.xtremepapers.com/community/threads/some-different-notes-website-are-available.31232/ hope this helps

TYSM

 

[oalevel2020]

Can LiAlH4 reduce both C=O and C=C? Why or why not? Can you please explain? Thank you in advance.

 

[Ayesha Asif333]

Can LiAlH4 reduce both C=O and C=C? Why or why not? Can you please explain? Thank you in advance.

its a strong unselective reducing agent for polar double only
bonds in C=C will not get attacked by AlH4- as its not polar

 

[oalevel2020]

its a strong unselective reducing agent for polar double only
bonds in C=C will not get attacked by AlH4- as its not polar

Thank you for your reply. Firstly, why LiAlH4 behaves like this? Secondly, what's the difference between its mode of action and that of NaBH4?