Posted by DEBBIE on Monday, March 22, 2010 at 7:49pm.
final mass initial mass CO2 mass
(1.) 84.755 minus 85.672 = .917
(2) 84.733 minus 85.684 = .951
(3) 84.757 minus 85.707 = .95
what is maximum volume of vinigar that can be neutralized by one alka seltzer tablet and explain? Not sure how to get this answer....HELP!

chemistry  DrBob222, Monday, March 22, 2010 at 8:48pm
Assuming NaHCO3 is the active ingredient in AlkaSeltzer that would react with vinegar,
2NaHCO3 + 2HC2H3O2(vinegar) ==> 2NaC2H3O2 + 2CO2 + 2H2O
Convert grams CO2 to moles CO2. moles = grams/molar mass.
Using the coefficients in the balanced equation, convert moles CO2 to moles vinegar.
Convert moles vinegar to grams. grams = moles x molar mass.
To get to the volume of vinegar from the grams vinegar, you need to know the percent acetic acid in vinegar. I have seen both 4% acetic acid and 5% acetic acid at the store for vinegar. If we use 4%, the number will be larger and the questin asks for maximum volume so let's use that figure. I will call acetic acid HAc.
percent acetic acid = (4 g HAc/100 g solution)
Therefore, 100 g soln x (g vinegar needed/4) = ??
Now you have grams vinegar. Convert to mL using the density of vinegar of 1.01 g/mL.
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