Chemistry(Please respond, thank you)

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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) -

    It is 0.04-x.

  • Chemistry(Please respond, thank you) -

    oh ok I see, thank you.

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