25.0 mL sample of vinegar was analyzed via titration in the same manner as you will use in this experiment. The standardized solution of NaOH was 0.950 M. A total of 10.5 mL of the sodium hydroxide were required to reach the pink endpoint. What was the concentration of the acetic acid in the vinegar solution?

25.0 mL sample of vinegar was analyzed via titration in the same manner as you will use in this experiment. The standardized solution of NaOH was 0.950 M. A total of 10.5 mL of the sodium hydroxide were required to reach the pink endpoint. What was the concentration of the acetic acid in the vinegar solution?

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 121AP: Calcium carbonate, CaCO3, can be obtained in a very pure state. Standard solutions of calcium ion...

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In the experiment, the amount of acetic acid in vinegar was determined by titrating with 0.1 M NaOH solution. In the analysis, three trials were performed to obtain more precise result. The table shows the initial and final burette readings for three titrations: Initial Burette Reading (mL) Final Burette Reading (mL) Trial 1 2.9 10.6 Trial 2 10.6 18.1 Trial 3 18.1 25.7 According to the given data, calculate molarity of acetic acid in the commercial vinegar. Please be sure that your answer includes followings; a) moles of NaOH for each trial b) average mole of NaOH c) average mole of acetic acid in 50 mL solution d) average mole of acetic acid in 250 mL solution e) molarity of acetic acid in vinegar.
Acid-Base Titration: 10 mL of unknown acid sample was placed in a 250 mL Flask. 3 drops (0.15 mL) of Phenolphthalein was added to the unknown acid sample. The 10.0 M NaOH solution titrant was also dispensed into the unkown acid sample until it changed color. The final volume of the unknown acid sample is 11.680 mL. Please provide the computation for the final concentration of the unknown acid sample.
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5. The concentration of an unknown sample of sulfuric acid was determined by the method used in this experiment, using two sets of titrations. In the first titration the sodium hydroxide was standardized by titrating 0.1355g of oxalic acid dihydrate (molar mass - 126.07g/mole) with 25.30mL of sodium hydroxide solution. In the second titration 20.00mL of the unknown sulfuric acid solution was titrated with 22.85mL of the sodium hydroxide solution. What was the concentration of the sulfuric acid? (Show your work!!)
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