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Industrial : K (EQ. constant) (1 Viewer)

Ozz^E

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Jul 6, 2002
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256
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Sydney
Wat did uz get for K....i think i got the answer wrong...but shoul get 2-3 marks for the working, formula etc.
 

kelbelks

New Member
Joined
Nov 8, 2002
Messages
1
i got something like 148148 but i have no idea how on earth i obtained it and take no responsibility for that answer... i was extremely screwed trying to do it.
 

sths

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Oct 11, 2002
Messages
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hey i got 11.55

is this rite?
if wrong plz explain wot i did wrong guys

so2 + 0.5 o2 --> So3

initial 0.06 0.05 0
change -0.04 -0.02 + 0.04
equli conc 0.02 0.03 0.04

thus using equlibrium formula = 0.04/ (0.03^0.5 x 0.02)

thx .......and hope everybody good luck for the hsc reuslts when they arrive!!!!!!!1
 

ske

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Oct 23, 2002
Messages
12
Location
sydney
yupyup!

theyr both correct...133.3 and 11.5 ish are both correct...coz it depends on whether u balanced it 2-1-2 or 1-1/2-1...one's the root of the other...:p
 

sths

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Oct 11, 2002
Messages
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thx man

hey cool news dude

u sure our teacher never told us this


but does that mean their is an infinite no of possible answers lol?
eg balance 4,2,4
8,4,8
 

Ozz^E

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Jul 6, 2002
Messages
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I dont think thats correct...theres only one equilibrum constant and its indicative of how much products/reactants are favoured at equilibrium. Using 1-1/2-1 or 2-1-2 shouldnt make any diff...i think the answer is 11.55.
 

kate

Member
Joined
Aug 5, 2002
Messages
100
can i ask.. how you work out the change in concentrations for the reactants?
 

sths

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Oct 11, 2002
Messages
23
heyis there only 1 value of k constant?

because im finding that if u balance it differently then u get diffrerent results

133.3
and 11.55

so does this mean one of them is wrong

ie.. u cant use calcultions of k wif non integer numbers as in


1 0.5 1 balanced.......
 

Ozz^E

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Jul 6, 2002
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Sydney
im not too sure...balancing shouldnt effect conc. and there should be only one K, because it is indicative of something.
 

cmore

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Oct 23, 2002
Messages
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Location
Earth
it matters how u write the equation!

If u write it 2so2 + o2 > r2so3 like i did u get 133.333333333...
but if u write it so2 + 1/2o2 > so3 u get 11.5......

since the k value for the first is the square of the second!

what gives! what is the real k value :(
 

rent

New Member
Joined
Oct 30, 2002
Messages
8
ske!
you da man!!
hehe (do you know who i am?)

i got 11.55 and 133 is also right! (yay!)

ok, this option is by far the hardest option because it took me over an hour to do this option. It doesn't fair, even with scaling, because when we spend more time on this option, there's less time for us to check and do stuff in the main part. And we have to rote learn industrial processes too!!!!!
 

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