Please help : Homework problem almost there ? Equilibrium

  • Thread starter marioland
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  • #1
marioland
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linky

Kc = .090

a). Calculate the concn. of all species at equilibrium if 1.00g of water and 4.78g of ClO are mixed in a 1.0L flask.

b). Calculate the concn. of all species at equilibrium if 1.0 mol of pure HOCl is placed in a 2.0L flask. Hint: consider what is now the reactant.





H2O + Cl2O --> 2HOCl

I| 18mol 88 mol 0
C| -x -x +x
E| 18-x 88-x x

Kc= .090 = [HOCl]2 / [H2O].[Cl2O] = x2/(18-x)(88-x)


Solve for x and find all species.Is this the correct way ? Am I confusing you... *hmmm*
 

Answers and Replies

  • #2
Bystander
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You're getting there, but you could use a little hint --- the equilibrium constant is written for CONCENTRATIONS --- you've got the stoichiometry in the exponents correctly --- what are the "concentrations?"
 
  • #3
Meninger
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You said that the reaction involved clo- and water which would be an acid base reaction.

Check to see if you wrote down the correct equation.

Acid base reaction would make more sense.
 

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