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OpenStudy (anonymous):
Use activity coefficients to find the concentration of hydrogen ions in a solution of 40.0 mM butanoic acid and 0.1 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm.
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OpenStudy (anonymous):
This subject is Maths not chemistry...
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