• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Chemistry: Post your doubts here!

Messages
302
Reaction score
432
Points
28
Can someone tell me how to draw the diagram for 1 (c)
and eg, of ONE method to prepare the concentrations ? in (d)
 

Attachments

  • 9701_s10_qp_52.pdf
    125.4 KB · Views: 2
Last edited:
Messages
302
Reaction score
432
Points
28
I have a question > When we want to use Bond energy of Cl2 >> as its quoted in the
Data booklet it should be 242 .. but for Many time i have seen that they are using 244 as the answer !
Why? which data should we quote if the question came to us ?
one of the questions is o'n 2009 va' 41

TheZodiac

6Astarstudent
 
Last edited:
Messages
347
Reaction score
520
Points
73
I have a question > When we want to use Bond energy of Cl2 >> as its quoted in the
Data booklet it should be 242 .. but for Many time i have seen that they are using 244 as the answer !
Why? which data should we quote if the question came to us ?
one of the questions is o'n 2009 va' 41

TheZodiac
I don't take chemistry.
 
Messages
140
Reaction score
106
Points
53
I have a question > When we want to use Bond energy of Cl2 >> as its quoted in the
Data booklet it should be 242 .. but for Many time i have seen that they are using 244 as the answer !
Why? which data should we quote if the question came to us ?
one of the questions is o'n 2009 va' 41

TheZodiac

6Astarstudent
keep in mind the data booklet each year are different versions, CIE may have slightly modified the data. Just use the data you get on the day of exam ie. the 2014 data booklet
 
Messages
302
Reaction score
432
Points
28
@
keep in mind the data booklet each year are different versions, CIE may have slightly modified the data. Just use the data you get on the day of exam ie. the 2014 data booklet
Resonable answer:rolleyes:
another mark scheme answer which confuse me is :

conditions for changing methylbenzene to chloro methyl benzene as we know is : Uv light and reagent Cl2
but as the markscheme for mj2007 says , it should be Cl2 and hf ! >> whats hf hhh
 

Attachments

  • Untitled.png
    Untitled.png
    10.7 KB · Views: 7
Top