Chemistry Predictions/Thoughts (1 Viewer)

[ManifestationIsKey]

what was the iodic acid and sulfamic acid question, were we supposed to know the formulas for it?

No you just had to calculate their pH by plugging in the numbers. But since it wan't equal to that 1.151 or whatever it was, it can't be a strong acid and doesn't fully ionise. Btw which one was stronger?

 

[O_Starkindler!]

No you just had to calculate their pH by plugging in the numbers. But since it wan't equal to that 1.151 or whatever it was, it can't be a strong acid and doesn't fully ionise. Btw which one was stronger?

light work. yeah iodic acid was the stronger one (the 0.1 molL-1 one) since you need less of it to obtain the same pH as the sulfamic acid

 

[femboys4life]

easy test should be abt 50 raw 100s in the state, so happy

 

[help2024]

what if i calculated degree of ionisation and did the ph do I get full marks?

 

[femboys4life]

will raw 100 state rank?

 

[farenheit_541]

will raw 100 state rank?

nah u need 101 to state rank this yr- easy exam

 

[femboys4life]

nah u need 101 to state rank this yr- easy exam

so there is no chance i state rank with raw 100? what did u need to do?

 

[radioheadfan42]

What do you reckon you guys got raw?

In the negatives YEAHHHH!!

kidding, but in all seriousness - as i tend to do - didnt get to finish it, so i think a maximum of 30-40 for me. If that. But hey! I finished more than in trials, and i got my depth study that i did pretty okay in so- win?

Not an academic win, but a personal win! XD

 

[farenheit_541]

so there is no chance i state rank with raw 100? what did u need to do?

nah fr i think u would need to get 100 raw, and be ranked 1st internally at a good school

 

[radioheadfan42]

Me when anything that isnt module 8 or 7:

module 6 can explode I HATE ACIDS AND BASES!!! I have a grudge.

 

[femboys4life]

nah fr i think u would need to get 100 raw, and be ranked 1st internally at a good school

so what abt atar contribution for chem this year

 

[leclerc16]

what raw mark would you need for a band 6?

 

[femboys4life]

what raw mark would you need for a band 6?

probably 92-95 this year

 

[potpal]

why am i always like 3 raw marks away from making a band 6/e4 happened in 4u too and now chem fml

 

[femboys4life]

why am i always like 3 raw marks away from making a band 6/e4 happened in 4u too and now chem fml

u like it rough dont u, slow and hard

 

[femboys4life]

nah fr i think u would need to get 100 raw, and be ranked 1st internally at a good school

cant u state rank no matter what ur internal is as long as external is good

 

[farenheit_541]

i thought it depends on ur whole hsc mark, which includes internals- otherwise wouldnt there be like 50-60 ppl all tied on 100 for chem/mx1/mx2?

cant u state rank no matter what ur internal is as long as external is good

 

[hughjanus_]

The reason that a Keq value of 0.53 is incorrect is due to the fact that you can’t do 0.1 - [BrCH2COOH](aq) to calculate [BrCH2COOH](octanol). This is because of the keyword “an AQUEOUS solution of 0.1M bromoacetic acid is shaken with an equal volume of octan-1-ol. This means that the concentration of bromoacetic acid in the entire solution is 0.05 M. Thus, instead of calculating the concentration of bromoacetic acid in water this way, you must instead replace [BrCH2COOH](aq) in the Ka expression with (0.1 - 9.18*10^3 - x) where x is [BrCH2COOH](octanol).

Because the concentration of bromoacetic acid in octanol and in water are not contributing to a singular molarity, it isn’t possible to do a simple 0.1 - [BrCH2COOH](aq) to solve the question.

 

[appleali]

guys i only answered mc but i think i got full marks can i state rank?

 

[potpal]

u like it rough dont u, slow and hard

yeah no fr i don’t know what’s up with me, maybe im secretly a masochist