- Messages
- 15
- Reaction score
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- Points
- 13
You too buddy.best of luck for BIO
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You too buddy.best of luck for BIO
Thanks! but I am not a Biology student!You too buddy.
So in the question I recall kcl having lesser moles to make a PPT and alcl3 had the most required moles for the positive ion fe203The reason I choose KCL was that it required the least amount of moles as compare to others, like the concentrations were given so you could calculate the amount required and because it was talking about cation as well.
YESSSSS THAZ EXACTLY Y I CHOSE ALCL3.So in the question I recall kcl having lesser moles to make a PPT and alcl3 had the most required moles for the positive ion fe203
In the next part the asked for arsenic saying it's negatively charged and said which one will be more efficient . So if alcl3 needed the most moles for the positive ion to form a PPT hence it would need the least for negative ion hence I wrote alcl3 I related it to the I - and s2O8 - reaction we learnt in theory that says similar charge reactions are less feasible .
well there goes my two marks XD. Yeah you guys are right the logic adds up.YESSSSS THAZ EXACTLY Y I CHOSE ALCL3.
lol its okwell there goes my two marks XD. Yeah you guys are right the logic adds up.
just revise all the past papersany last minute help on cie a level chemistry paper 5
Thanks. did you do 51 or 52just revise all the past papers
don't attempt them...just go thru the past questions from 15 to 17 (since they r the latest and one's most according to our syllabus)
find online notes here and there if u can tho i dint use any
m assuming youve already gone thru the book but if u havent id suggest reading the chapter about practical skills from the book
go to chemguideforcie.co.uk if u want to cuz thaz where u can find the best notes for anything related to A Levels chem
but if u dont have the time, just going thru the papers will help
52Thanks. did you do 51 or 52
well not toughwas it cool?
nopedid it follow amy year pattern
it followed w 10 or s 1o read those for question 2 the molarity question was very similar to the one that came todaydid it follow amy year pattern
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