Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

Please explain 

An environmental chemist analyzes the effluent (waste material) released from an industrial process. The effluent contains benzoic acid, C6H5COOH(aq), the concentration of which must be monitored to ensure that it does not exceed environmentally safe levels. The results of a titration analysis of the effluent are shown in the table below. Titration of 100 mL effluent samples with 0.0155 mol/L NaOH(aq) Trial Final buret reading (mL) Initial buret reading (mL) Volume of NaOH(aq) added (mL) 1 2 3 17.34 28.72 40.25 4 12.81 0.63 17.34 28.72 1.22
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Transcribed Image Text:An environmental chemist analyzes the effluent (waste material) released from an industrial process. The effluent contains benzoic acid, C6H5COOH(aq), the concentration of which must be monitored to ensure that it does not exceed environmentally safe levels. The results of a titration analysis of the effluent are shown in the table below. Titration of 100 mL effluent samples with 0.0155 mol/L NaOH(aq) Trial Final buret reading (mL) Initial buret reading (mL) Volume of NaOH(aq) added (mL) 1 2 3 17.34 28.72 40.25 4 12.81 0.63 17.34 28.72 1.22
Titration of 100 mL effluent samples with 0.0155 mol/L NaOH(aq) Trial Final buret reading (mL) Initial buret reading (mL) Volume of NaOH(aq) added (mL) 9.10 × 10-³ mol/L 1.78 x 10-3 mol/L 0.135 mol/L 1 1.09 x 10-² mol/L 2 Question 8 The concentration of the benzoic acid in the effluent is 3 17.34 28.72 40.25 0.63 17.34 28.72 4 12.81 1.22
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Transcribed Image Text:Titration of 100 mL effluent samples with 0.0155 mol/L NaOH(aq) Trial Final buret reading (mL) Initial buret reading (mL) Volume of NaOH(aq) added (mL) 9.10 × 10-³ mol/L 1.78 x 10-3 mol/L 0.135 mol/L 1 1.09 x 10-² mol/L 2 Question 8 The concentration of the benzoic acid in the effluent is 3 17.34 28.72 40.25 0.63 17.34 28.72 4 12.81 1.22
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