past paper Qs (1 Viewer)

[swagswagyoloswag]

https://9eeba4054ee764a743f35bb25b5...rraween 2011 Chemistry Trials & Solutions.pdf
how would I do q3 and q8?
and also, is the answer to q13 D?

 

[InteGrand]

https://9eeba4054ee764a743f35bb25b5...rraween 2011 Chemistry Trials & Solutions.pdf
how would I do q3 and q8?
and also, is the answer to q13 D?

The answer to Q.13 should be (A), not (D).

 

[rand_althor]

 

[rand_althor]

8. The tricky part of this question is the way in which the monomer is presented. It is easier to do if you condense the methyl group on the right into CH3. In the polymerisation process, the double bond opens up and monomers join up, forming a polymer. Hopefully this picture helps:

 

[swagswagyoloswag]

The answer to Q.13 should be (A), not (D).

How come? I was thinking it wouldn't be linear but eventually it has to reach zero which A doesn't indicate
Also, is there an equation that relates "solubility" with "time"?
Like in Physics, a = Gm/r^2 we can say it would look like (A) because as r varies, a varies inversely

 

[rand_althor]

How come? I was thinking it wouldn't be linear but eventually it has to reach zero which A doesn't indicate
Also, is there an equation that relates "solubility" with "time"?
Like in Physics, a = Gm/r^2 we can say it would look like (A) because as r varies, a varies inversely

No HSC equation that I know of for that. You are looking at concentration here, so think of the equations happening in the soft drink bottle. I think it reaches equilibrium so it would flatten out near the end, rather than reach zero.

 

[InteGrand]

How come? I was thinking it wouldn't be linear but eventually it has to reach zero which A doesn't indicate
Also, is there an equation that relates "solubility" with "time"?
Like in Physics, a = Gm/r^2 we can say it would look like (A) because as r varies, a varies inversely

 

[dan964]

The answer to Q.13 should be (A), not (D).

I'll add it in.