Chemistry paper1 2009

[1992]

hello everyone, i wanna thank everyone that helped me, but i want one last help
can anyone solve M/J 2009: Q8 and 28
O/N 2009 21: Q5

 

[princesszahra]

june 09 q8
cuz formation values r given
delta H nought of pdts - reactants
so
2(-288.8) - 2 ( -187.8)
so u get -196

 

[princesszahra]

june 09 q28
after prolonged heating
the carbon of alkene will be changed to CHO
and also the one in the ring
u already have one is the diagram
so there r 3!

 

[princesszahra]

the nov paper
could u tell me the same question in p12/???/

 

[duffer geek]

hey as for q 28
they have told us that it reacts with hot KMNO4 to give a compound
all double bonds will give a keto group each so that there are 3 keo groups in total and hence 3 DNPH will react! Wat say?

 

[princesszahra]

@duffer greek
right man!