Chemistry

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The Ka for a particular weak acid is 4.0 x 10-9. Calculate the pH of a 0.040 M solution of this acid.

whats the relation b/w Ka and pH?

  • Chemistry -

    You must use Ka to determine the (H^+), then use pH = -log(H^+) to determine pH.

  • Chemistry -

    How do we find [H+]?

  • Chemistry -

    Ka= [A^-][H^+]/[HA]
    you have to make an ice table

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