Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:2.) Vinegar is an aqueous solution (homogenous mixture) of acetic acid and water (aqueous= "aqua"= Latin
for water).
To simplify the calculations let us assume that all of the acetic acid in the vinegar reacts and there is some
left over "excess" baking soda. The vinegar solution is a 5% acetic acid solution. If you look at the bottle of
vinegar somewhere on there it probably says “5% acidity" or similar notation. Let us estimate that about
25.0 g of vinegar solution was used in this experiment, approximately the mass of the 1 inch depth that was
poured into the empty water bottle. Of this 25.0 g solution, only 5% of it is acetic acid. The amount of
acetic acid in grams needs to be determined because that is what reacted, not the full 25.0 g solution. The
calculation below shows what number is needed.
5% acetic acid solution =
{ grams acetic acid
х 100
25.0 grams acetic acid SOLUTION
Solving for results in a value of
?
grams acetic acid (HC2H3O2).
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