I\'ll be honest with you... I have absolutely no idea how to fill in the chart a

Question

I'll be honest with you... I have absolutely no idea how to fill in the chart above (first picture). I have no idea what numbers I have to find from which graph or table. My lab professor has made me even more confused about the subject and I need some kind of help. If i need to submit more data, please tell me what it is you need! Please I'm desperate and exhausted. 40 mL of a .10 M acetic acid solution used.

The CCLI Initiative TITRATION CURVES AND THE DISSOCIATION CONSTANT OF ACETIC ACID Report Sheet Molarity of the HC,H,0, in Original Unknown mL. NaOH at equivalence point Molarity of standard NaOH Calculated HC H:O2 molarity Calculation: A M Vg Determination of the Ka of HC2H3O2 Run 1 Data Point llri I Ka calculated mL NaOH distance ¾ distance Run 2 Data Point mL NaOHpH HK, calculated ¼ distance ½ distance ¾ distance Average K, value Calculation of first Ka: 239

Explanation / Answer

Here you have find the value of the dissociation constant Ka which you may know, for simplification the dissociation constant is defined as a quantity expressing the extent to which a particular substance in solution is dissociated into ions, equal to the product of the concentrations of the respective ions divided by the concentration of the undissociated molecule.

For acetic acid we can define the value Ka as

Ka = [CH3COO-] [H+] / [CH3COOH]

So you need to fill values of the dissociation constant in the table, you have beengiven initial concentrations in the tables from which you need to calculate final concentrations by using

MaVa = MbVb

So then by the equation of Ka find their values and put in the tables

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