Posted by Allie on Thursday, September 29, 2011 at 12:01am.
Are you adding NaOH to acetic acid or are you adding sodium acetate to acetic acid.
I'm adding NaOH
......CH3COOH + OH^-==> CH3COO^- + H2O
If we started with 2.5 mL of 2M CH3COOH that would be 2.5 x 2 = 5 mmoles. Then we add 2.5 mmoles NaOH which gives us at equilibrium 2.5 mmoles acetate and 5.0-2.5 = 2.5 mmoles CH3COOH.
Total is 2.5 mmoles CH3COOH + 2.5 mmoles CH3COONa = 5 mmoles total/50 mL = 0.1M
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