CSSA chem trial (2 Viewers)

[Jenn]

Man i know!!
i put the ph one was 3

btw the nitrogen thing.. i wrote about back titration
the models one was STUPID!!!!!
heat molar combustion? we didnt get that .. maybe ur teacher changed some stuff around

but phys!!!

 

[Dumbarse]

yeh i got pH 3 for nitric acid one, i did ionisation with water to get H30+ concentration, was same number of moles as concentration given so just used the rule ph=-log10[H30+] and got 2.8 something, so pH 3
is that how u are supposed to do it??

yeh i also said back titration
, what did ppl put for the assumptions part of that nitrogen content question??

 

[Mistress Lilith]

Originally posted by Dumbarse
yeh i got pH 3 for nitric acid one, i did ionisation with water to get H30+ concentration, was same number of moles as concentration given so just used the rule ph=-log10[H30+] and got 2.8 something, so pH 3
is that how u are supposed to do it??

Yep, that's how I did it too so it better be right

 

[lappang]

What was the deal with the use witht he modules question that can't ask that its not int he syllabus...i am very glad that we did an internally based chemistry trial aka a cut and paste job of the independent, CSSA and last years HSC

 

[schwang_thang]

gaynessss!

i hated it...!
they were all damned processing qstns...i want sumthing where u can just regurgitate!
n since when was non/destructive testing in the syllabus? i cant find it!