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Thoughts on HSC chemistry 2015 (1 Viewer)

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Mr_Kap

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since it was an easy exam will a 80 raw got to 87???

I went through the exam with my teacher (a HSC marker over the past 5 years) and we think i got 85 raw marking harshly based on what i told him i answered ....but i'm taking into account 5 marks of silly mistake and other things i stufed. up
 
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Drsoccerball said:
Ill predict physics and ex 1 the day before
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You must be related to me, with all the correct predictions you've been making.

At school everyone knows that i've been predictin questions correct sinc year 11. In yr 11 english i predicted all the essayss.

Year Biology half yearly i predicted like most of the paper.
Same as chemistry.
Predicted year 11 2u math last question in yearly
Chemistry trial i also predicted the 7 marker on Haber Process, 5 marker on AAS, and 5 marker on Ester.
Bio trial predicted the epidemiology 7 marker, and the Immune response 8 marker.
Predicted in bio HSC we were gonna have to talk about hearing aids/cochlear implants in 7 marker. Predicted that we were gonna have to talk about the wavelngths that animals hear.


And in HSC physics i predict we will have to answer 20 multiple choice questions
 
Kaido

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Hm, discriminator would be that acetate Q, don't think I got 3.
Anyone have the correct reasoning for pH change?
 
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Kaido said:
Hm, discriminator would be that acetate Q, don't think I got 3.
Anyone have the correct reasoning for pH change?
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Its a buffer. I probably got 0/3 for that. And yeh, that would be the discriminator. I don't know how i didn't see it was a buffer though. FML. Im still hopeful for the rest of the paper though. Just need to focus on physics.
 
Kaido

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Mr_Kap said:
Its a buffer. I probably got 0/3 for that. And yeh, that would be the discriminator. I don't know how i didn't see it was a buffer though. FML. Im still hopeful for the rest of the paper though. Just need to focus on physics.
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Yeah thought so, the wording was unusual, so i didn't see it either.
 
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Kaido said:
Yeah thought so, the wording was unusual, so i didn't see it either.
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i treated it as excess NaOH being added to a neutralization, and i even wrote an equation and shit. I still cant believe i didn't realise it was a buffer though
 
Crisium

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Kaido said:
Hm, discriminator would be that acetate Q, don't think I got 3.
Anyone have the correct reasoning for pH change?
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That's too straight forward to be the discriminator - Everyone said they realised it was a buffer solution and since a "small amount" of sodium hydroxide was being added there is no change in pH

I think the discriminator's would have popped up in the options
 
Kaido

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Crisium said:
That's too straight forward to be the discriminator - Everyone said they realised it was a buffer solution and since a "small amount" of sodium hydroxide was being added there is no change in pH

I think the discriminator's would have popped up in the options
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Probably, Shipwrecks this year was really easy :/
Rekt by that Q doe, nothing else seemed to stump anyone
 
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