XtremePapers

yup! me here!

do u hav chemp33?

tomorrow?

yea

please help me !
what are topics for 2mrw's ppr??
and which pprs should i review
i hav nvr did any practical
private student

ooooh! Well i heard theres a titration, enthalpy change of combustion and salt analysis!
i would suggest you practice mole calculations! You do know how to do titrations right??

not actuali please guide me
which titration coming ? i only hav some idea
combustion of alchol?? what would we have to do with it ??

any instructions for moles ?

any idea which salts are coming though ?

the salts coming are Cations : manganese, chromium and barium
Anions : chloride and sulphate

the mole calculations are usually easy, the normal N = c*v
And taking mole ratios to find out no. of moles

r u sure ? and which titration ?? n please give me a brief idea how to do it
cant thank u enough srsly
jazakAllah, may u get all A*

we find moles in 25cm3 den we hav to find in 2503
number of moles remain same ryt

i dont know exactly which titration, but somthng to do with KI.
did u go through the papers. They ill tell you wat to do. Its easy u ill fine. Remember the first readin is rough. Repeat nd if the second reading u get is within 0.20 difference. Its accurate and go wit it. Also chk out some videos on titration so u knw how to do it.
Dude its ok, just relax before the paper. And inshalla v ill get A*. Hopefully

yes they remain the same. Thats a very imp. point!

actuali even my net isnt working cant evn watch videos :;(
by using KI wats the starting and ending point

and hey if we have naoh and hcl's titration what will we take in burrette and what will we take in conical flask ??

see usually with KI they give you sodium thiosulfate . and copper(11) sulfate. You take the copper(ii)sulphate in a conical flak with a pipette and the add KI.