1 MORE LAST CHEM QUESTION PL0XXX

[matt123]

at equilibrium ... does it mean the rate of the forward and back reaction are equal?

thanks

[Whatlol]

at equilibrium ... does it mean the rate of the forward and back reaction are equal?

thanks

correct

[98.40_for_sure]

Yes, equilibrium by definition is a dynamic process, whereby the forward and back reactions are equal, thus the concentrations of reactants and products remain constant. This is basically in EVERY frickin exam in multi choice. Same with the question about catalyst changing rates of forward and back reaction.

[matt123]

hmmm yeah
I just did insight 08 paper.

and stupid lost a mark on a question that said

from this equilibrum constant ( the AXb / CXD ) equation thing.... what could you conclude about the rate ?

the answer was
"nothing , you cannot get information about rate from the equilibrium equation"

however my answer was ... since its at equilbirum , we can gather that the rate of both the forward and the back reactions will be constant( the same).

?
is that not correct?

[Russ]

If it's AT equilibrium, yes, but just knowing what the equation is doesn't mean that the reaction is at equilibrium. As such, you know nothing about the rate of reactions from just the equilibrium constant.

[matt123]

If it's AT equilibrium, yes, but just knowing what the equation is doesn't mean that the reaction is at equilibrium. As such, you know nothing about the rate of reactions from just the equilibrium constant.

yeah ur correct

but in the question .. im sure it said the system was at EQM.

ill double check

thanks alot peeps

[98.40_for_sure]

Yeah, that's a very common trick. They like to use it about the e-series too (however the e-series actually does give a small indication of rate... Eo values have a relationship with rate of reaction). Same with some of the industrial stuff.

yeah ur correct

but in the question .. im sure it said the system was at EQM.

ill double check

thanks alot peeps

Well if it said "the system was at equilibrium" then thats a different story, but you said in previous post that the question said "from this equilibrium constant", which means you don't know if the system is at equilibrium or not.

[matt123]

Yeah, that's a very common trick. They like to use it about the e-series too (however the e-series actually does give a small indication of rate... Eo values have a relationship with rate of reaction). Same with some of the industrial stuff.

yeah ur correct

but in the question .. im sure it said the system was at EQM.

ill double check

thanks alot peeps

Well if it said "the system was at equilibrium" then thats a different story, but you said in previous post that the question said "from this equilibrium constant", which means you don't know if the system is at equilibrium or not.

yeah sorry my bad.
it actualy DIDNT say it was at EQM... i think i just made a stupid assumption and read it wrong.

thanks alot for the help foaks