Homework Help: Chemistry(Please respond, thank you)

Posted by Hannah on Saturday, April 7, 2012 at 9:11pm.

The ionization constant of HA is 4.0e-4. Using the ice table what is the equilibrium concentration of HA in terms of its initial concentration and x?

HA(aq) + H2O(l) = H3O^+^(aq) + A^-^(aq)

I 0.040M OM OM
C -X +x +x
E ? x x

I thought that to find the concentration you need to do 0.040-x=4.0e-4 but I am not sure if this is correct.

Chemistry(Please respond, thank you) - DrBob222, Saturday, April 7, 2012 at 9:30pm
It is 0.04-x.
Chemistry(Please respond, thank you) - Hannah, Saturday, April 7, 2012 at 9:45pm
oh ok I see, thank you.

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