Equilibrium problem

sanaday

4

I don't understand b) how do we know that 0.0637 is the concentration of CuCl42- at equilibrium?

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Looking at the snapshot you gave us, it looks like it's just part B of a question to tell you information that you need to know to calculate Kc; since there is no information in part A to allow us to calculate Kc

Reply 2

sanaday

OP

4

Original post by aaron7502

Looking at the snapshot you gave us, it looks like it's just part B of a question to tell you information that you need to know to calculate Kc; since there is no information in part A to allow us to calculate Kc

Still a bit iffy about this but yes, I see what you mean.

Reply 3

aaron7502

6

Original post by sanaday

Still a bit iffy about this but yes, I see what you mean.

Well if you see, in part (a), you're only given information about the initial conc. stage, whereas you NEED at least 1 value for moles/conc at equilibrium to be able to calculate Kc -- so that's where part (b) comes in, to tell you about conc at eq. of CuCl42-

Reply 4

sanaday

OP

4

Original post by aaron7502

Well if you see, in part (a), you're only given information about the initial conc. stage, whereas you NEED at least 1 value for moles/conc at equilibrium to be able to calculate Kc -- so that's where part (b) comes in, to tell you about conc at eq. of CuCl42-

Oh so at 291K the equilibrium conc of CuCl42- is 0.0637. Thanks I understand it now. :smile:

Equilibrium problem

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