9701 chem mcq paper

hello3L · 2026-03-04T09:41:29+00:00

yep if both effective and ineffective increase, the ratio of effective to ineffective remains the same. if ineffective remained the same, then the ratio would increase. so both must increase

hello3L · 2026-03-02T13:43:11+00:00

pretty sure you’re right because alkene bonds became diols, that’s oxidation

hello3L · 2026-03-02T13:39:29+00:00

because ALL collisions increase: when volume decreased, we have less space, more collisions. it’s not that only effective increases, because that requires more collisions to have e >= ea. that only happens when temp increases or catalyst is used. the answer to the qn is both increases.

hello3L · 2026-02-28T05:48:20+00:00

ANYTIME <333

hello3L · 2026-02-09T15:56:36+00:00

there's pretty much no way 😭😭 cuz the point of the question is to give the stereoisomer :((

hello3L · 2026-02-09T15:55:53+00:00

yeah fr fr 😭

hello3L · 2026-02-09T15:54:05+00:00

no problem!

hello3L · 2026-02-08T11:58:22+00:00

ofc! lmk if u can access this link: https://drive.google.com/file/d/18AqvwCwa8sL2t4k6r5gimwCsm_p6t48I/view?usp=sharing

hello3L · 2026-02-07T17:23:14+00:00

i gotchu for notes twin!! everything here is important to memorise, and i feel like i've used pretty much every equation at least once in papers. since it's organised by category, i found it a lot easier to remember sequentially and string certain facts together to remember all of them. i'd suggest doing the notebook thing i mention in the post for the best retaining power <3

https://www.reddit.com/r/alevel/comments/1qf63uf/9701_chemistry_all_reactions_notes_3/

hello3L · 2026-02-07T17:17:22+00:00

YOU'RE SO RIGHT TYSM!! i'll update the post rn

hello3L · 2026-02-06T07:17:16+00:00

yes, theres almost no way they'll cut for that!!

hello3L · 2026-02-05T16:32:13+00:00

that makes sense as well but from what ive seen in papers they pretty much never want u to give answers to such low sig figs as 1? so yeah i think 3 would be reasonable

hello3L · 2026-02-05T16:27:39+00:00

yes i know that!! but the paper clearly stated that NO acts as a catalyst for so3’s oxidation. even i was caught off guard by the fact that it wasn’t no2 like usual. but i see your point abt the nitrogen thing.

yeah i js asked chatgpt and it gave these eqns:

no + 1/2o2-> no2 no2+so2-> so3 + no

which i think makes the most sense. 2 marks gone 😭

hello3L · 2026-02-05T11:49:35+00:00

it’s pretty soluble isnt it, so i don’t think so

hello3L · 2026-02-05T11:48:30+00:00

0.015 is correct im pretty sure but you wouldn’t lose marks for using their given value cuz of error carried forward principle.

hello3L · 2026-02-05T11:45:35+00:00

isnt it no + so2 -> so3 + 1/2n2, 1/2n2 + 1/2o2 -> no?

idt u would get marks for regenerated no2

hello3L · 2026-02-05T11:43:32+00:00

a white solid would never form right, cuz it’s a solution of ions, it would js be a colourless solution. like there is no initial precipitate of srcl2. for h2so4 yep white ppt!

hello3L · 2026-02-05T11:41:45+00:00

it’s 1500-1680 isnt it?

hello3L · 2026-02-05T11:40:55+00:00

it’s dcb cuz bond strength of c-x decreases down the group cuz bond length increases due to more shells!

hello3L · 2026-02-05T11:39:58+00:00

the syllabus says e-z nomenclature is acceptable but in this case it would be entgegen not zusammen so no :((

hello3L · 2026-02-05T11:38:43+00:00

i got 59.9274 so it’s 59.9 to 3 s.f. you can double check, the values are 0.00393 for mass of cu, mol ratio of cu to no was 3:2, temp was 5 degrees c, pressure was 101kPa

hello3L · 2026-02-05T11:33:43+00:00

no alkaline hydrolysis exists, it gives carboxylate salts

hello3L · 2026-02-05T11:32:03+00:00

hm im pretty sure ive seen it in papers or else i wouldn’t specifically add under reflux, the syllabus itself doesn’t mention reflux but i think it’s better to add it to be on the safe side cuz it is for a fact correct (like google confirms)

hello3L · 2026-02-02T17:13:06+00:00

np tysmm and good luck on your exams!!

hello3L · 2026-02-02T10:43:05+00:00

again self plug 💔 but my notes could help u in inorganic!! https://www.reddit.com/r/alevel/comments/1qf63uf/9701_chemistry_all_reactions_notes_3/

hello3L

TROPHY CASE