how was it (1 Viewer)

electrolysis

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Guessed 3 MC questions, but the rest of test was pretty good, especially the industrial chem option <3 :)
 

Gibbatron

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Overall thought it was a pretty good and easy test. Used a whole booklet for the option. I was lucky - it didn't have any of the stuff im not good at in it (nuclear, batteries, cfc's). Its the first test ive finished comfortably, so i was happy with it. Except for a couple of the mc questions >.<
 

NoName91

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argh! what is this battery question a few people have mentioned????? i swear i dont remember there being one...
I think they're referring to the galvanic cell question - which is a battery lol. I'm glad there wasn't a comparison of lead or dry cell with another battery thing :) .. but I guess its not too bad
 

trrc027

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I think they're referring to the galvanic cell question - which is a battery lol. I'm glad there wasn't a comparison of lead or dry cell with another battery thing :) .. but I guess its not too bad
o good, that makes me feel much better, i nearly had a heart attack! missing a whole question wouldve ruined my mark, hoping for band 6, loved that exam! calculations=amazing! shipwrecks topic was crap tho :(
 

NoName91

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o good, that makes me feel much better, i nearly had a heart attack! missing a whole question wouldve ruined my mark, hoping for band 6, loved that exam! calculations=amazing! shipwrecks topic was crap tho :(
Shipwrecks was ok I think... what did the first question mean? With the cans? Really strange, hasn't been a question like that before. I'm glad the 7 marker was on the history of cells etc.
 

mitchwong650

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Shipwrecks was ok I think... what did the first question mean? With the cans? Really strange, hasn't been a question like that before. I'm glad the 7 marker was on the history of cells etc.

personally i loved shipwrecks.

Q 1 a) was just aluminium (as it forms a passivating layer)
b) was really weird and i just fudged some answer about protective paints and stuff...

the rest was great.
 

Drewx

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The emulsions question in Industrial Chemistry was so left field did not see it coming.
 

Gibbatron

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The emulsions question in Industrial Chemistry was so left field did not see it coming.
Lol i reckon. So was the question that asked for THE major use of sulfuric acid. I said fertilisers, but i was surprised by it. Normally it just asks for ONE major use.
 

123huss123

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Guessed 3 MC questions, but the rest of test was pretty good, especially the industrial chem option <3 :)


man wat did u get for ur value of K in industrial chemmmm your the only one i seee hoo done itt everyone done shipwrecksss
 

sordatsoy

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For industrial...what was the main use of sulfuric acid???....i did dehydrating agent....but not sure.
 

123huss123

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i sedd dehydrating and pikling agent lma0
mmm think i got my K rong thennnn
got like 0.913 or somting like that
oh well
 

mR sinister

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i got the ethanol mass correct, and also the emf.
but for nitrogen content in the bread ....
I got 0.8%
anyone else get this?
 

123huss123

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m i gott 1.7% forr the breadd question
0.9 for emf andd 3.8ish for ethanollll oneee
 

boo92

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i liked it. i did biochem option. 7 marks on a pe question. great for me coz i do pe. the paper was heaps better than i thought. my teacher thought we wouldnt like it but i think all the class liked it. there's only 10 of us lol. last exam. glad its over now!!
 

TechnIx

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Main uses of Sulfuric Acid include:
Electrolyte in Car Batteries (Think about all the cars out there..)
Steel Manufacture (Pickling)
Fertilisers

From Wikipedia:
"Principal uses include lead-acid batteries for cars and other vehicles, ore processing, fertilizer manufacturing, oil refining, wastewater processing, and chemical synthesis."
 

electrolysis

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The main use for sulfuric acid is in the manufacture of superphosphate (a type of fertiliser) - it accounts for 72% of sulfuric acid's industrial use
equation: Ca3(PO4)2 + 2H2SO4 + 4H2O ---> Ca(H2PO4)2 + 2CaSO4.2H2O
I dont think you need the equation, but I put it in just for the fun of it :)
 

GUSSSSSSSSSSSSS

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BAH chem was good....LAST EXAM WOO!!! xD xD

celebrated it with 4hrs at the net cafe =P
 

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