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Data of NaOH Trial 1: mass=0.537g Volume =23.6ml Trial 2: mass=0.566g Volume = 26.8ml Trial 3: mass= 0.611g Volume = 23.4ml 1) calculate the molarity of NaOH for each trial and find the average molarity.

Data of NaOH Trial 1: mass=0.537g Volume =23.6ml Trial 2: mass=0.566g Volume = 26.8ml Trial 3: mass= 0.611g Volume = 23.4ml 1) calculate the molarity of NaOH for each trial and find the average molarity.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Data of NaOH Trial 1: mass=0.537g Volume =23.6ml Trial 2: mass=0.566g Volume = 26.8ml Trial 3: mass= 0.611g Volume = 23.4ml 1) calculate the molarity of NaOH for each trial and find the average molarity.
B-Preparation of 200 mL of 0.10 M NaOH You need to calculate the mass of NaOH that you need to weigh and dissolve in 200 mL of water to make 200 mL of 0.10 M NaOH, Hint: NaOH pellets should be weighed on a watch glass, mix it well with water. (Caution: NaOH is very corrosive, do not spill and if you do, wash it off immediately with an excess of water.) C- Standardization of ~0.10M NAOH "Determining the concentration of NaOH" 1- Weigh duplicate samples of 0.50-0.60 g of previously dried standard KHP into_125 or 250- ml flasks. Dissolve each sample in ~25.0- ml in distilled water. 2 - Add 2-4 drops of phenolphthalein indicator. Titrate it with NaOH until the first appearance of a permanent, pink color. 3- If runs do not agree to about two parts per thousand, repeat for the third time and calculate the average of the two closest results.
Transcribed Image Text:B-Preparation of 200 mL of 0.10 M NaOH You need to calculate the mass of NaOH that you need to weigh and dissolve in 200 mL of water to make 200 mL of 0.10 M NaOH, Hint: NaOH pellets should be weighed on a watch glass, mix it well with water. (Caution: NaOH is very corrosive, do not spill and if you do, wash it off immediately with an excess of water.) C- Standardization of ~0.10M NAOH "Determining the concentration of NaOH" 1- Weigh duplicate samples of 0.50-0.60 g of previously dried standard KHP into_125 or 250- ml flasks. Dissolve each sample in ~25.0- ml in distilled water. 2 - Add 2-4 drops of phenolphthalein indicator. Titrate it with NaOH until the first appearance of a permanent, pink color. 3- If runs do not agree to about two parts per thousand, repeat for the third time and calculate the average of the two closest results.
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