chemistry

What is [H+] concentration in a 4M aq solution of acetic acid (Ka= 1.8 E-5)?

what formula do you use to get the answer?

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  1. Set up an ICE chart, substitute into the Ka expression, and solve for the unknown.

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    posted by DrBob222
  2. could you remind me what an ICE chart is?

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  3. If we call acetic acid, HAc, then
    ................HAc ==> H^+ + Ac^-
    initial(I).......4.......0......0
    change(C).......-x......x.......x
    equil(E).........4-x.....x.......x

    Ka = (H^+)(Ac^-)/(HAc)
    1.8E-5 = (x)(x)/(4.0-x)
    Solve for x = (H^+).

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    posted by DrBob222
  4. thank you!

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