Chemistry Predictions/Thoughts (3 Viewers)

[sivak23]

yea it was tricky... honestly im just hoping for some generic titration, ice table q, solubility etc, but i feel like they are gonna throw random stuff in today. istg if they test like the titration analysis or application techniques im actually gonna crash out

Pleasee, I need those ice tables and titration calculations. If it's mostly theory, I will crash out!

 

[BionicMango]

guys how easy is mod 8 compared to 7?

Mod 8 is harder

 

[BionicMango]

Good luck today guys

 

[reniiiblaseee]

how was it

 

[sakinluvo]

it was mid at best

 

[lawfirm]

Could have been way way worse, but you still had to know your stuff

 

[iane]

Did we think that it was harder or easier then 2024

 

[smiskis]

it was lowkey alright, there were only like 4 calculation questions for some reason … and a 7 mark titration question ??

 

[nana__]

why was there so much theory had to skip a bunch of questions

 

[regality]

i found this harder than 2024

 

[bigbird102]

i found this harder than 2024

i think it was like exact same difficulty as 2024

 

[angelf444wn]

Did we think that it was harder or easier then 2024

Like the same level? I got X for the chalk brand what did other ppl get

 

[academicalwizard101]

What was ka of acid in the titration curve question? And why did ph of naoh 0.1 mol/l never reach 13

 

[coolcat6778]

What was ka of acid in the titration curve question? And why did ph of naoh 0.1 mol/l never reach 13

this test was so fucking hard. 2024 asked surface level questions i could've scraped a band 4 with

 

[RedDragonStar1]

idk what was up with this but i threw very much so on the titration and pH calc questions for some reason

ngl kinda pissed off at my performance but oh well, probably got like 80-85 raw hopefully (rip band 6 dream)

 

[lawfirm]

What was ka of acid in the titration curve question? And why did ph of naoh 0.1 mol/l never reach 13

I got some weird 10^-15 which seems wrong. For ph I said that there will be a weak conj acid which will reduce the ph slightly

 

[smiskis]

What was ka of acid in the titration curve question? And why did ph of naoh 0.1 mol/l never reach 13

you had to find the half equivalence point on the titration curve where pKa = pH and then solve from there using Ka = 10^-pKa

 

[coolcat6778]

you had to find the half equivalence point on the titration curve where pKa = pH and then solve from there using Ka = 10^-pKa

when was this taught to us in the syllabus?

 

[RedDragonStar1]

What was ka of acid in the titration curve question? And why did ph of naoh 0.1 mol/l never reach 13

Half equivalence of pH --> pKa
For the never reach pH=13, the pH of pure NaOH was 13, so the presence of some acid will mean the net pH is always below 13 (like an asymptote)

 

[anonymoushehe]

Did we think that it was harder or easier then 2024

Much easier than 24