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The answer would be A or C. A assumes degree of ionisation is irrelevant and that the weak acid will fully ionise. C assumes that a weak acid may not fully ionise, hence less H+ and hence less base is required to neutralize the H+.

You probably doubled counted one, as it can be rotated around.

He means he dominated the question. QED is "quod est demonstradum" which basically translates to thus it has been shown.

I thought it was a pretty good exam - pretty straightforward. The industrial chem about liquid X was weird, although I did write concentrated H2SO4 and said somrthing about it being a dehydrating agent. I really vaguely remember seeing crystals like that in a year 11 text book.. i think the...

Doubt there's any real way to determine if it'll be "easier" or "harder" as it will be the first time they've introduced it into 2/3/4 unit. However, the thing with MC is that you're either right or wrong - you don't get any sympathy marks for working out or whatever. Which, I guess, could...

Edited. ;)

I think many people will find that if they did the paper as a practice one at home without exam stress they wouldn't have found it as hard. 6&7 were pretty doable - the only thing that was tricky and required a lot of staring at and "wtf" (for me at least) was question 5. Le sigh. I don't...

Not if this is the kind of gimmicky, let's-rant-at-the-authorities/government piece of crap they keep spilling out. :P

That article is a load of rubbish. Another piece of bullcrap space filler and shit stirrer. Of course she only quoted people whining about it - but I don't think there will ever be a HSC exam that SOMEBODY SOMEWHERE isn't complaining about. And whilst I do agree that papers should perhaps not...

To both you and the OP, yes. Seeing as its only a 3 mark question, you'll probably get 2 marks for your correct working out. @OP, I'm not sure whether you wrote the correct final answer or not.. if not, you'll get 2 marks. If you did, you will probably get 3 marks, but dont quote me on this.

An 80/84 last year scaled to a 98. Considering the apparent increase in difficulty of the paper this year and the fact that at the higher end of the scale, you need more raw marks to go up one scaled mark, it probably is around a 97. :) Well done, its a fantastic mark. :)

Edit: nevermind.

Apologies. Either my sarcasm-o-meter is broken or I've been lulled into treating all such questions seriously. :P

Ah, okay I couldn't remember what the question said and I cbf to look it up. I stand corrected. :)

Eh? Yes they are. http://www.hsccoaching.com/Resources/2011%20Ext2.pdf

I think the turning point was (ln4, 1/8) The y intercept was -1. I assume that you'd usually have to. f'(x)=0 does not automatically mean it's a max. point. It could be a minimum or a horizontal point of inflexion or whatever for all you know.

I agree. It wasn't that difficult. I think what would have thrown a lot of people was the.. uhh, "quirky" question 5. But really, all they did was swap the difficulties of question 5 and 6.

Yeah that was the proof I used. I think I may have thrown in something else in there for good measure, and I just hope I won't get marked down for it. :x Gunning for a 75+ to compensate for my crap 4 unit. Le sigh.

Errr, definitely not. A sample of 60 out of 7000 or whatever is definitely not representative of the state (particularly since it's a BoS sample). There's also no way of knowing if people truthfully voted or voted for lulz.

Ondaatje was not too bad. You could just talk about the cyclic nature, the coherency of it, *hint hint* textual integrity. I talked about the "lights" as enlightement, etc. and the "rear-view mirror" as a kind of self-reflexivity tool. I was lucky though, as my teacher had gone through this...