Please help : Homework problem.. almost there ? Equilibrium

[marioland]

linky (http://www.physicsforums.com/showthread.php?s=&threadid=8583)

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*

[Bystander]

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?"

[Meninger]

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.