couldn't find a satisfying solution online

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24 Replies
iTeachChem Helper
@Dexter
iTeachChem Helper
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SirLancelotDuLac
Is it 2?
iTeachChem
iTeachChem2mo ago
लोल this was bs hence edited. Edited cos wrong
Nimboi
Nimboi2mo ago
okay so region 1 is first order, since rate proportional to time is the definition of 1st order similarly with region 3 being zero order so A is wrong, C is correct, D is wrong E how'd you determine? if rate proportional to time^(0.1 to 0.9), the graph wouldn't be asymptotic, it'd keep growing right
Nephilim
NephilimOP2mo ago
The answer is given B only
Nimboi
Nimboi2mo ago
B only? why not C [redacted]
SirLancelotDuLac
For c, region one should be of the order 0.5 and for region three should be zeroth order ig. Also, why is A not true?
Nephilim
NephilimOP2mo ago
thats easy since region II has a weird order and I looks like 1st order so can't be 1 overall maybe the answer i have is wrong cuz I looks like 1st order and III like 0 order
Nimboi
Nimboi2mo ago
oh by the way this is invalid i got confused between time and concentration so idk i should probably do this question again all the way through
Real potato
Real potato2mo ago
I hve seen this que on marks app they hve also mentioned only B ig the ans is wrong for this que
SirLancelotDuLac
Oh sorry mb I meant the (B) one Oh wait sorry. My bad.
iTeachChem
iTeachChem2mo ago
answer is numerical entry na it decreases from 0.9 to 0.1 to 0 :) (yea this is wrong लोल ignore it)
ChaiEnjoyer
ChaiEnjoyer2mo ago
Wouldn't the rate be proportional to [A]^(0.9 to 0.1) instead of time For order
iTeachChem
iTeachChem2mo ago
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ChaiEnjoyer
ChaiEnjoyer2mo ago
Exactly 😂 I was confused as well
Prachi
Prachi2mo ago
This same question was discussed in our class today and omg... the conversations, the derivations done, the other options of this question discussed like why it isn't right, the correct reason to explain this was like uff... we spent 15-20 minutes in this question and then, somebody told sir the graph ashish sir is talking, and dammnnnn... The whole class was shocked what they have done to miss this little key information So, yeah... everyone was like what just happened in here
Nephilim
NephilimOP2mo ago
yea wahi answer 1 tha but kuch jagah i saw option B thats why i said finally an answer lol! so it's a reversible reaction that's why we can't determine the order? and the way to solve this is to have this graph remembered? haha you studying this chap in 11th?
iTeachChem
iTeachChem2w ago
Yea it is taught in equilibrium. No not really but from this graph where you are plotting rate vs time you can’t get the order. Rate vs conc you can get the order. Or conc vs time +fsolved
iTeachChem Helper
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