n an experiment of production of aluminum hydroxide Al(OH)3 by reacting AlCl3 with NaOH, the student expected theoretically to get 2.66 g of solid aluminum hydroxide. His results for the experiment repeated 3 times are as follows: Experiment no. 1 2 3 Actual mass of Al(OH)3 obtained (in grams) 2.57 1.89 2.31 a) Comment on the precision and accuracy of his experiment b) In your opinion. What could be the source of error in these experiments? c) Calculate the percent yield of Al(OH)3 obtained for all the experiments together. (show all your calculations, units and significant figures are important
n an experiment of production of aluminum hydroxide Al(OH)3 by reacting AlCl3 with NaOH, the student expected theoretically to get 2.66 g of solid aluminum hydroxide. His results for the experiment repeated 3 times are as follows: Experiment no. 1 2 3 Actual mass of Al(OH)3 obtained (in grams) 2.57 1.89 2.31 a) Comment on the precision and accuracy of his experiment b) In your opinion. What could be the source of error in these experiments? c) Calculate the percent yield of Al(OH)3 obtained for all the experiments together. (show all your calculations, units and significant figures are important
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter3: Stoichiometry
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Question
In an experiment of production of aluminum hydroxide Al(OH)3 by reacting AlCl3 with
NaOH, the student expected theoretically to get 2.66 g of solid aluminum hydroxide. His
results for the experiment repeated 3 times are as follows:
Experiment no. 1 2 3
Actual mass of Al(OH)3 obtained (in grams) 2.57 1.89 2.31
a) Comment on the precision and accuracy of his experiment
b) In your opinion. What could be the source of error in these experiments?
c) Calculate the percent yield of Al(OH)3 obtained for all the experiments together.
(show all your calculations, units and significant figures are important
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