- Why do my concentrations at equilibrium not add up to my initial amount?
So my professor covered acids and bases recently, and this is how he presented the method (please see attached word document). I believe its the same as the I.C.E method, though im not sure. Anyways my problem is perhaps conceptual, but I dont understand why the concentrations at equilibrium dont add up to the amount added in the first place. The first step is to calculate the initial concentrations for the acetic acid at equilibrium by finding alpha. Once you have alpha you can plug it in to the table to find the concentrations. I thought id check that the concentrations at equilibrium added up to 0.1M but they add up to more. Where am I going wrong here?