Experiment 1 Gravimetric Analysis - Evaluation Question 3 PDF

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Structural Chemistry With Application To Chemistry Of The Elements...

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9/24/2018

Experiment 1 Gravimetric Analysis - Evaluation Question 3

Experiment 1 Online Tutorial >> Gravimetric Analysis >> Evaluation Questions

Gravimetric Analysis -Introduction -Precipitating the ion

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Name: Cindy Shi

Lab ID: 28217

-How much Na2SO4 to add -Amount of Pb2+ in the sample

Experiment 1 - Gravimetric Analysis

-Application Question

Evaluation Question 3

-Evaluation Questions

Part (a) An impure barium chloride sample weighing about 0.38 g was dissolved in water and then treated with excess sulfuric acid. Calculate the volume of 3.5 M H2SO4 needed to completely precipitate the barium ions as barium sulfate, BaSO4. (Give your answer to 2 significant figures.) mL H2SO4 Check Answer

Your answer is correct! Name: Cindy Shi

Lab ID: 28217

Part (b) The impure barium chloride sample from Part (a) was found to have a mass of 0.3819 g. The mass of barium sulfate, BaSO4, that precipitated from the addition of sulfuric acid was 0.1783 g. What is the percentage barium in the unknown sample? (Please give your answer to 4 significant figures) % Check Answer

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Experiment 1 Gravimetric Analysis - Evaluation Question 3

Last Updated: Wednesday, September 27th, 2017 @ 07:35:34 pm

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