The 2004 HSC - Chemistry Paper (2 Viewers)

[Terra_Niux]

hope everyone survived it!!

Don't think I did

 

[Jezzabelle]

art & forensic

last ones i promise

 

[kow_dude]

very surprising... they didnt even mention the haber process as they did for the past few years.

 

[fush]

and there was hardly any water stuff as well

 

[dafidav]

can i ask what people wrote as their pH for that question where 0.01 mol/L HCl was diluted with 90ml water

i know the answer is either 3 or 5

what did people write??

i said 5

 

[ay_caramba]

that was a good paper!

 

[jumb]

Don't think I did

Me either.

The questions werent that bad, a little obscure though.

 

[ay_caramba]

can i ask what people wrote as their pH for that question where 0.01 mol/L HCl was diluted with 90ml water

i know the answer is either 3 or 5

what did people write??

i said 5

hehe i wrote pH 3
dunno if its rite

 

[withoutaface]

can i ask what people wrote as their pH for that question where 0.01 mol/L HCl was diluted with 90ml water

i know the answer is either 3 or 5

what did people write??

i said 5

It was 3.

 

[Leasha23]

can i ask what people wrote as their pH for that question where 0.01 mol/L HCl was diluted with 90ml water

i know the answer is either 3 or 5

what did people write??

i said 5

yep it was three as far as i could work out!

pretty alright paper... some tough ones, but not too many calculations - something i was happy about!

 

[jam3s]

very surprising... they didnt even mention the haber process as they did for the past few years.

why whould they ask the haber process again, u just haver to read the past papers, they never ask the same qestions or similar 1s

 

[withoutaface]

not too many calculations - something i was happy about!

 

[jam3s]

it was good exam good option the MC was gay hard qestions and too many calculation which took ages

 

[froglenn]

can i ask what people wrote as their pH for that question where 0.01 mol/L HCl was diluted with 90ml water

i know the answer is either 3 or 5

what did people write??

i said 5

i got 3, 0.01 x 0.01 = (concentration of hydrochloric acid) x 0.1

As hydrochloric acid is monoprotic, then hydrogen ion concentration is the same as hydrochloric acid, unlike say sulfuric acid. u get 0.001, which ends up as pH = 3, but i might be wrong (as i usually am ).

 

[jam3s]

yep it was three as far as i could work out!

pretty alright paper... some tough ones, but not too many calculations - something i was happy about!

becuase they cramped it in the MC how gay

 

[dafidav]

oh shiat

oh well lets hope i do well in the other qs

 

[jumb]

I felt good when I read the paper, because when we were waiting to go in i go "quick, someone tell me an industrial isotope and what its used for!" So everyone got that question right

 

[dafidav]

for that hcl qs

this is how i did it and got ph of 5

n=0.01 x 0.01
=0.0001

and then it was diluted to 100ml, so dilute factor of 10

so u divide 0.0001 by 10 and get 0.00001

so ph=-log[H+]

so =-log 0.00001

=5

but so many people sayings its 3

 

[dafidav]

for that idustrial isotope

can u use technetium 99m??

cos like thats the medical industry

i wasnt sure if you could use medical industry

 

[v-tech]

That exam was so easy compared to the others like the trials. I reckon i got band 5 atleast