Analysis of a “Milk of Magnesia”

4. The Milk of Magnesia resoluteness was titrated with acetum, adding 5 drops of vinegar at a time. After distributively 5 drops was added, the beaker was swirled and the pH allowed to come to equilibrium, then the value was conduct and recorded in the data table.

5. This process was continued until the pH no longer changed with the addition of more vinegar.

1. The meretriciousness of vinegar added at each step was compute from the calibration of the dropper, and the cumulative volume of vinegar added for each pH value was calculated and recorded.

2.

A titration curve was drawn using the Graphical abbreviation software from the laboratory kit, which is a graph of pH vs. volume of titrant (vinegar).

b) according to the graph, the second OH- dissociates at pH

1. Mg(OH)2 has two hydroxide ions to donate to solution. The first and second dissociation equations that represent these reactions are:

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