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I definitely agree with this guy and all the people before, Excel books are amazing. saved me in physics chemistry and ext math. Conquering Chemistry is a great book too, and it teaches the course in the correct order too... buy Excel and CC , without at doubt :party:

i must say i found this paper amazingly easy. however, i did 0 past papers so i can't compare with the previous HSC exams...

i touched on that too, just in case, however the question specifically asked about the GUTTER only, not the steel nails... but oh well.

Simply the layout of the exam. if you look at all the options , all the last questions are worth 7 marks. guess they wanted a knowledge dump. and i was also quite disappointed there was no deep sea corrosion! i spent the whole morning doing last minute cramming on the sporovibrio desulfurican...

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.

I concur. The test really didn't get us to apply any of the more detailed parts of the course. i would've liked some CFCs and ozone stuff too, but no.

1. Use a lid to contain the heat in the environment 2. Same as above

haha no haber process, its just like finding the % of sulfate in BaSO4 but instead of sulfate its nitrogen and instead of BaSO4 its ammonium

Aluminium all the way..... can't be bothered to elaborate but basically, it's passivating

lol, got that right, but seriously, platinum cheaper than silver? platinum is around 350 dollars more expensive than even gold per ounce...

no, one was strong and one was weak that's due to the equivalence point's varying so much.

well i had second thoughts about pressure, so i wrote what this guy did: but yeah.... who knows.

not a problem, thanks

no, there was a steep drop, so it means the system had its volume increased / pressure decreased

yes, yes it is =D yes.

yep, phew =D

exactly what i was getting at

temp increase, CO removal, system volume decrease (or increase i dont remember but you get the point)

Sorry bud, but there was no iron. It was a platinum electrode and a lead electrode in a solution of Fe2+/Fe3+ there was no Fe(s). therefore lead is oxidised, not the imaginary Fe(s)

i lol'd at that too. nice sig ;) and uhhh yes. i just used something that wouldnt react in place of Ag+ ions