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A 5.54 gram sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the mass percent by weight of acetic acid in the vinegar?
Given Calculations 1) Total Vinegar (CH3COOH solution) mass: 5.54 grams.
2) Neutralizing Sodium Hydroxide (NaOH): 30.10 mL (0.03010 Liters).
(Step 1)
Find the molar mass of CH3COOH
(C2 = 24.02) + (H4 = 4.032) + (O2 = 31.998) = 60.05 grams (molar mass)
(Step 2)
Find the moles of NaOH
Moles of NaOH = (0.100 M NaOH) x (0.03010 Liters NaOH) = 3.01 x 10-3 moles
(Step 3)
Find the grams of CH3COOH
Grams of NaOH = 3.01 x 10-3 x 60.05 (molar mass) = 0.18075 grams
(Grams of CH3COOH = Grams of NaOH at equivalence point, the point where the solution was neutralized)
(Step 4)
Find mass percent of Acetic Acid in Vinegar
Mass % = (0.18075 grams CH3COOH / 5.54 grams vinegar) x 100 = 3.26%
Wiki User
∙ 9y ago
Anonymous
Wiki User
∙ 8y agoVinegar is a mixture of acetic acid in water. Both acetic acid and water molecules contain oxygen atoms, so the percentage of oxygen in vinegar will be different depending on how much water is present. This varies with the type of vinegar, or with the process used to make a "distilled" vinegar.
Wiki User
∙ 13y ago%C= 40.08%
%H= 5.04%
%O= 53.31%
Keep in mind that this total amount adds up to a little less then 100%. That is because each Periodic Table has a different set of values for the elements' mass (ex. Hydrogen can be 1.01 or 1.0080 or 1.00079) so depending on what table you use each percentage will be different but they should all come close to 100%
Wiki User
∙ 13y agoIt must be at least 4% of acetic acid to be legally labeled vinegar. Household vinegar can have anywhere from 4%-8%.
Wiki User
∙ 15y agoShouldn't be too hard... (4/50)*100=8% hydrogen by mass in acetic acid.
Wiki User
∙ 14y agoThis question is fundamentally unclear. If you mean what percent by volume of the Earth's atmosphere is composed of oxygen, the answer is about 21%
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∙ 13y agoFind the mass of the acetic acid in your sample of mustard, and then divide that by the density of your mustard sample. Multiply your answer by 100%.
Wiki User
∙ 12y agoyes vinegar is acetic acid CH3COOH so it has oxygen
Wiki User
∙ 7y agoFor a vinegar with 9 % acetic acid the molarity is 1,5.
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