59 Replies
@Dexter
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Are data dia hua hai usse rate of rxn find kro
neet?
Fir 2-3 alag data ka use krke rate law likho jisme conc ki power kuch x and y assume kro equations ko divide krke Rate constant kat jayega or order pata chal jayega
Fir rate law likh paoge
I think he means need
2 bas se nhi kar sakte?
us se bhi ho jayega
Ha wo data p depend krta hai
ik yaar mera joke mat khrb karo
Sometime we need to solve 3 jab data har concentration ka alag hota hai to cancel out ni hota hai
oh well hn tab
Nahi ho raha naa
Thing is dono me initial compositions is diffrent
For both cases
Usme kaise karoge ye
Ye nahi hoga idhar
We need to use both to find k
Both cases
3 data dia hai na 3 equation bana k try kro
Aayein
Send actual q. Pic hai?
nahi sir ne class me example karwaye the ye
3 equation mai kar bhi lunga to merko har case ka ek alag k aaega
@Real potato
ill send in a cleaner write up of the question
,rotate
Assuming the time is in minutes: Note that A and b are getting depleted by the same values, hence there is an excess of A in the reaction. Further note that the ratio of consecutive values of [B] are in the ratio of 0.8, which is a characteristic for first order reaction in B.
Furthermore, let there be two consecutive concentrations of B as $B{0}e^{kt}$ and $B{0}e^{k(t+10)}$ then their ratio is $e^{-k \cdot 10}$ which is equal to 0.8
SirLancelotDuLac
Take log both sides then and solve.
A and b are getting depleted by the same values,
wdym same valuesLooking at the first 2, both [A] and [B] are depleted by .002, then by .0016 and so on.
Meaning when [B] tends to zero, [A] tends to A-[B]=0.01
This tells us about the stoichiometric coefficient, which I just thought of writing.
ohhh waisee okok
fine ok ig this makes a lot of sense
what about the second one
The first and second columns indicate initial concentration or concc. at that time?
initial
@SirLancelotDuLac
hapl
@Real potato
hapl
bhai initial conc or time t for conc dia hai usse aap rate of rxn nikalo
Fir rate = K [A]^x [B]^y
Given data se 3 eqn ban jayega
Compare krke x or Y ki value aajyegi by dividing equations
rate constant cancle out ho jayega
A or B k respect me order aagya fir rate of rate law expression likh paaoge
Okie, bear with me on this but, from the first one,
ii.) On having dichromate, the reaction takes twice as long to be half completed
iii.) On halving the HgCl_2, the reaction is nearly half completed at the same time.
Yeah nvm this doesn't give much lmao.
Bhai AB wala ho gaya
Hg wala hapl kar do
Ig esehi ho payega equation ko divide krke m or n nikal lena @Phalawor
HAWW
ITNI MEHNAT BRUHHHHHHH
nah easy h dekho na first or second eqn me ek ek bracket to pura cancle ho ra hai
They are different reactions though?
For instance the amount of dichromate is same in 3 and 1 which isn't possible.
It can't be the same reaction.
Teeno me jo time dia hai wo zero se hi hai na?
But initial conditions alag hai teeno mein.
But isse rate constant thodi effect hoga
But equations mein rate kaise likhenge, jabh same reaction ke do instances ki information hi nahi hai?
Hg2cl2 ka dia hai to
avg rate to likh skte hai na? C2-C1/T?
But agar teeno alag alag reactions hai, toh how will we get c2 for, say reaction 3?
Because teeno reaction ki initial conditions alag hai
Oh, I get your point. Do we have to write the reaction out?
But order to same ana cheye na reacatants k respect me?
npoe
no reaction given
and acc to my teach
its not needed either
Do you know the ans?
nope
i asked him today
he said later
so idk
maybe tommrow
Ye standard questions hai so what im trying to do is solve thru standard method like by finding the order first
but yeah i may be wrong though i havent revised kinetics in a while
Ye, but we don't know c2 in c2-c1 na?
nope ye wo wala simple table question nahi hai
Depression x 1,000
IKRR
Last me jo hg2cl2 wla hai wo dia to hai?
HES GIVING OUT SOME REAL FIRE QUESTIONS
I mean mast wala table
Ye, so to get final concentrations, we need to write out the reaction no?
Final concentration to kisi ek ka hi cheye padta hai avg rate likhne baki ka nikal kar kya krege?
hg2cl2 se hi avg rate aajyegi
:Saul_Goodman:
Fair point.
@Phalawor please confirm this once you get to know the proper method and ans
haa yaar kal puchta hu or else ill go mad
mai ye question save kar leti
jab kinetics kar lungi tab
karungi