Chemical Kinetics

Mam said if 1 is true , 3 cant be true , but why?
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24 Replies
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Shhh
Shhh2w ago
Kyunki k is proportional to ln(conc/final conc)
Gamertug
GamertugOP2w ago
and?
Shhh
Shhh2w ago
so k or t ka slope ho ya ln(ao/a) ka dono same hin honge.../
Gamertug
GamertugOP2w ago
what yes what does that have to do with 3rd being wrong tho i dont get it
Gamertug
GamertugOP2w ago
i mean when i solved i did get the y = mx + c form for the first one but idk what to do with 3rd mam said if 1st is correct the 3rd will be incorrect but i dont get how
iTeachChem
iTeachChem2w ago
could you please share the expression for total pressure (and hence, partial pressure of A?) (hint: this is in ncert :)
Gamertug
GamertugOP2w ago
its will be ln(p0/p0-p) = kt pt = p0 + 2p p = pt - p0 /2
iTeachChem
iTeachChem2w ago
okay so then what will the pressure of A be?
Gamertug
GamertugOP2w ago
solving that we get ln (2p0 / 3p0 - pt) = kt and ln (3p0 - pt ) = -kt + ln(2p0)
iTeachChem
iTeachChem2w ago
partial
Gamertug
GamertugOP2w ago
what
iTeachChem
iTeachChem2w ago
tadaaaa if 3po-p is linear then po-p cannot be, right?
Gamertug
GamertugOP2w ago
ye but its inside ln , how can we be sure of it thats what am asking
iTeachChem
iTeachChem2w ago
whaddya mean
Gamertug
GamertugOP2w ago
i mean idk how can we be sure it wont be linear
iTeachChem
iTeachChem2w ago
I take the linear part back, thats not imporant here. the graph ln p0-p does not represent this setup that is important
Gamertug
GamertugOP2w ago
ye i mean what if it does how can we be sure that it wont what if coincidentally its the same graph
iTeachChem
iTeachChem2w ago
slope cant be same na even if it is linear
Gamertug
GamertugOP2w ago
i can feel the intuition but is there any way to prove
iTeachChem
iTeachChem2w ago
desmos me plot it :)
Cakey Bot
Cakey Bot2w ago
iteachchem
Transcription requested by Mast Raho Yar
Can you share the pressure at any point in time t? What is the total pressure going to be? What is the expression for that? If you start with p not at time equal to zero, which means only a is present at time t, you will have some a that, you know, concentration come over here, then some amount of b and c are also found to account for their pressures, doing all of this similar to what you're doing in chemical equilibrium. What is the expression for p there? Think about that, and you'll get why which one is correct and which one's incorrect.

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