Exam Thoughts

[adelaide.emily10]

it was a relatively straightforward exam but i stuffed q4 becuase i thought that the mole ration was 1:1 so i ended up with 70 something - hopefully i'll get consequential for that  

[billius1]

skipped over q4...knew i wouldn't get it so didn't waste my time trying...but from what i've heard it was incredibly difficult.

for the redox equation, they won't give everyone a mark, because the instructions clearly said what was expected. they've made mistakes like that before and just say 'it didn't adversely effect the students' so they leave it.

when you think about it though...it didn't...it was just an easy mark (i hope i didn't stuff it up) what were the coefficients people got?

[you0006]

Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?

YES!!! and then I asked the supervisor if that was wrong, and she's like "VCAA checks the papers at least 10 times, so No you're wrong"


She's a moron.

[Tashi]

skipped over q4...knew i wouldn't get it so didn't waste my time trying...but from what i've heard it was incredibly difficult.

for the redox equation, they won't give everyone a mark, because the instructions clearly said what was expected. they've made mistakes like that before and just say 'it didn't adversely effect the students' so they leave it.

when you think about it though...it didn't...it was just an easy mark (i hope i didn't stuff it up) what were the coefficients people got?

It could potentially screw some people up if they thought they were meant to write more products. Last year they announced to everyone that an electron was missing a negative sign, how did they miss this?!

[Tashi]

skipped over q4...knew i wouldn't get it so didn't waste my time trying...but from what i've heard it was incredibly difficult.

for the redox equation, they won't give everyone a mark, because the instructions clearly said what was expected. they've made mistakes like that before and just say 'it didn't adversely effect the students' so they leave it.

when you think about it though...it didn't...it was just an easy mark (i hope i didn't stuff it up) what were the coefficients people got?

In itself, the question wasn't difficult, it was just all the information that you were given was confusing.

[VivaTequila]

Question 4 was retarded, not because of part A but because of part B

When I was looking through it I clearly spent the first 5 minutes planning my answer, trying to figure out where the FOUR FREAKING MARKS WERE

I thought that the trick to the question was that the precipitate (contains 6 H2O molecules) would be properly dried (the exact wording of the question said 'thoroughly dried'... ambiguous much?) and subsequently found the molar mass of the anhydrous version of the compound, THEN proceeded to use that to find the amount of phosphorus (giving a much greater yield as the precipitate would have been anhydrous)

Then I read the next question and completely friggin' raged because it wasn't actually put in an oven, but nonetheless it was dried thoroughly

WTF VCAA

[cltf]

Question 4, THE PERCENTAGE IS THE SAME. After heating the H2O is loss, so the mass and molar mass of the precipitate decrease proportionally.

[adelaide.emily10]

Question 4 was retarded, not because of part A but because of part B

When I was looking through it I clearly spent the first 5 minutes planning my answer, trying to figure out where the FOUR FREAKING MARKS WERE

I thought that the trick to the question was that the precipitate (contains 6 H2O molecules) would be properly dried (the exact wording of the question said 'thoroughly dried'... ambiguous much?) and subsequently found the molar mass of the anhydrous version of the compound, THEN proceeded to use that to find the amount of phosphorus (giving a much greater yield as the precipitate would have been anhydrous)

Then I read the next question and completely friggin' raged because it wasn't actually put in an oven, but nonetheless it was dried thoroughly

WTF VCAA

i was put off by part b mainly because it said 'delibratly' so i couldn't establish if they used the anhydrous in the calculation so it would be the same or if they use the molar mass of the wet one so the answer would be lower...so i just explained the possibilites which probably is quite problematic...

[bawse]

Hated this exam

[cltf]

Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?

YES!!! and then I asked the supervisor if that was wrong, and she's like "VCAA checks the papers at least 10 times, so No you're wrong"


She's a moron.

The question may have been written incorrectly, but if you couldn't figure out what you were meant to do then you (anyone) have a problem. Logic + Common sense dictates.

[Greatness]

Question 4, THE PERCENTAGE IS THE SAME. After heating the H2O is loss, so the mass and molar mass of the precipitate decrease proportionally.

How sure are you of this?

[The Full House]

Did anyone see this in the balanced redox equation?

_ H+ + _TeO3 + Cr2O7 ---> _ + H2TeO4 + _ + Cr3+ + _ H2O

_ + H2TO4 wtf?

I SAW THAt.. I was like what the hell VCAA o_O

[The Full House]

I thought the exam had some pretty easy marks. The difficulty range was really wide though... some of those multiple choice questions were ridiculously easy. Eg. question 1...

And then some were weird/hard/confusing... How do you work out the one where it said something like 'a gas is 2.86g per L at STP. The gas is most likely ____. '

[Greatness]

I thought the exam had some pretty easy marks. The difficulty range was really wide though... some of those multiple choice questions were ridiculously easy. Eg. question 1...

And then some were weird/hard/confusing... How do you work out the one where it said something like 'a gas is 2.86g per L at STP. The gas is most likely ____. '

I got D for that.........

[Tashi]

I thought the exam had some pretty easy marks. The difficulty range was really wide though... some of those multiple choice questions were ridiculously easy. Eg. question 1...

And then some were weird/hard/confusing... How do you work out the one where it said something like 'a gas is 2.86g per L at STP. The gas is most likely ____. '

I got D? Found the molar mass using n=V/Vm, where V = 1. Then used Mr = m/n, so 2.86/[whatever you got in first equation]