AS Chemistry PRACTICAL 33

[falcon678]

Lol....
um i gues there r just 3 formulas?

 

[A star]

which

 

[falcon678]

combustion=reactants - products
formation= products - reactants

 

[Ahmad Zaeem]

Guys check out oct/nov 2011 P34 qs 1 ....its really good ....you should solve this paper before going

 

[falcon678]

http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w11_qp_34.pdf

for those lazy people.... like me..

 

[sufyanalizaib]

Yr marking scheme bh daal deta

 

[falcon678]

Yr marking scheme bh daal deta

dal gai janab!

http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w11_ms_34.pdf

 

[Ahmad Zaeem]

dal gai janab!

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w11_ms_34.pdf

lol....i guess he's gonna like you a lot now ...

 

[A star]

yar u guys goodluck me off jo hoga so hoga well we will see who will conquer cie or be conquer let the war begin

 

[falcon678]

lol....i guess he's gonna like you a lot now ...

tht makes sense...

 

[falcon678]

Goodluck guys.... m off as well!

 

[Cesar_malik]

Whats the least count of the apparatus given above please all

 

[Sweetnsilly]

Can anybody PLEASE help me with the order of reagents that they usually ask in the cation anion test?
i have no idea which reagent is to be used after what and which order would give incorrect result
eg.reagent 1: to identify any carbonate ion present
reagent 2: to identify any chloide ions present
now i know the answers but can someone actually explain the logic behind the order and all?
Any guidance regarding this would be highly sppreciated

 

[stella jazz]

Dude i have confirmed these questions ......the source is reliable ....AT LAST ..... ....

yea i got 2 know the same stuff 2....looks pretty reliable!

 

[sufyanalizaib]

partyyyyyyyyyyyy!!!!!!!!!!! on hy

 

[sufyanalizaib]

normally they ask to draw two straight lines that intersect in enthalpy......wha reeally do these lines show ........:/

 

[Mohamed Suhail]

dont worry guys everything will be alright lets hope for the best. good luck to everyone taking the paper tomorrow.....

 

[salvatore]

Guys.. I need some help.

Lead(II) and aluminium ions show the same results when tested with ammonia and sodium hydroxide. How can I distinguish between the two ions?

 

[sufyanalizaib]

JUNE 2007 paper 31 is coming.....

 

[sufyanalizaib]

add HCl if insoluble than pb
ion is presnt otherwise Al ion ..........also potassium dichromate gives bright yellow ppt with pb