- #1
Misr
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1-The concentration of water,solid substances and precipates should not appear in the equilibrium constant equation Kc , why?I don't understand.Please don't tell me that because their concentration remains constant whatever their quantities. because I have read these words tens of times and I don't really understand them.
2-according to my textbook " if the reactants and the products are in the gasoeus state,the concentration is expressed by their partial pressure" What does this mean?
3-CH3COOH <----->CH3COO- + H3O+
let a be the no. of dissociated moles.So if we want to calculate the concentration of CH3COOH why should we say its remaining concentration=C-a,where C is the orginal concentration of CH3COOH before dissociation?.
4-H2O <---->H+ + OH-
Kc= [H+] [OH-]/[H2O]=10^-14
Kw=[H+] [OH-] = 10^-14
how could the two equations have the same value?why we are totally neglecting water?and what is the importance of calculating Kw?
I've asked a question here here but it made no sense so please don't repeat the same answer.
http://answers.yahoo.com/question/i...sH4G60Dty6IX;_ylv=3?qid=20101210130754AASJDiN
Help me please I'm very confused!
Thanks in advance.
2-according to my textbook " if the reactants and the products are in the gasoeus state,the concentration is expressed by their partial pressure" What does this mean?
3-CH3COOH <----->CH3COO- + H3O+
let a be the no. of dissociated moles.So if we want to calculate the concentration of CH3COOH why should we say its remaining concentration=C-a,where C is the orginal concentration of CH3COOH before dissociation?.
4-H2O <---->H+ + OH-
Kc= [H+] [OH-]/[H2O]=10^-14
Kw=[H+] [OH-] = 10^-14
how could the two equations have the same value?why we are totally neglecting water?and what is the importance of calculating Kw?
I've asked a question here here but it made no sense so please don't repeat the same answer.
http://answers.yahoo.com/question/i...sH4G60Dty6IX;_ylv=3?qid=20101210130754AASJDiN
Help me please I'm very confused!
Thanks in advance.