DATA Table Trial 1 Trail 2 Trial 3 Mass cleaning solution (g) 10.1 10.1 9.8 Mass vinegar added to reach endpoint (g) 12.6 14.3 12.2 Brand of household ammonia Wally Times scented ammonia Brand of distilled, white vinegar captain jacks special recipe Acidity of the distilled, white vinegar (marked on cotainer) 5.0% alysis: (Note: use factor-label analysis to help you with these calculations.) a. Calculate the moles of HC_H,0, added to reach the endpoint and record the value in the Analysis Table. To make this calculation, use the mass of vinegar added, the concentration of HC_H¸O, from the distilled vinegar bottle (e.g, 5% acidity » 5% HC,HO; by mass =5 g HC,H.O: / 100 g vinegar), and the molar mass of HC;H:O. b. Calculate the moles of NH, that was added to the container from the household cleaning solution and record the value in the Analysis Table. This calculation is based on the mole-to-mole ratio of HC_H,O, to NH, in the balanced reaction and the moles of HC:H O; needed to reach the titration endpoint (calculated in part a). NH,(ag) – HC,H,O,(ag) O NH,"(@9) + C,H,O,"(@g) c Calculate the mass of NH, that was added to the container from the housebold cleaning solution and record the value in the Analysis Table. Use the moles of NH, determined in part b and the molar mass of NH, to calculate this mass. d. Calculate the percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Use the mass of NH, determined in part c and the mass of household cleaning solution added to the clear container. e. Calculate the average percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Analysis Table Trial 1 Trail 2 Trial 3 Moles of HC,H,0, to reach endpoint Moles of NH, added to container Mass of NH, added to container (9) Percent composition NH, (m/m) in household cleaning solution Average Percent composition NH, (m/m) in household cleaning solution

DATA Table Trial 1 Trail 2 Trial 3 Mass cleaning solution (g) 10.1 10.1 9.8 Mass vinegar added to reach endpoint (g) 12.6 14.3 12.2 Brand of household ammonia Wally Times scented ammonia Brand of distilled, white vinegar captain jacks special recipe Acidity of the distilled, white vinegar (marked on cotainer) 5.0% alysis: (Note: use factor-label analysis to help you with these calculations.) a. Calculate the moles of HC_H,0, added to reach the endpoint and record the value in the Analysis Table. To make this calculation, use the mass of vinegar added, the concentration of HC_H¸O, from the distilled vinegar bottle (e.g, 5% acidity » 5% HC,HO; by mass =5 g HC,H.O: / 100 g vinegar), and the molar mass of HC;H:O. b. Calculate the moles of NH, that was added to the container from the household cleaning solution and record the value in the Analysis Table. This calculation is based on the mole-to-mole ratio of HC_H,O, to NH, in the balanced reaction and the moles of HC:H O; needed to reach the titration endpoint (calculated in part a). NH,(ag) – HC,H,O,(ag) O NH,"(@9) + C,H,O,"(@g) c Calculate the mass of NH, that was added to the container from the housebold cleaning solution and record the value in the Analysis Table. Use the moles of NH, determined in part b and the molar mass of NH, to calculate this mass. d. Calculate the percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Use the mass of NH, determined in part c and the mass of household cleaning solution added to the clear container. e. Calculate the average percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Analysis Table Trial 1 Trail 2 Trial 3 Moles of HC,H,0, to reach endpoint Moles of NH, added to container Mass of NH, added to container (9) Percent composition NH, (m/m) in household cleaning solution Average Percent composition NH, (m/m) in household cleaning 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 27CR

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Transcribed Image Text:DATA Table Trial 1 Trail 2 Trial 3 Mass cleaning solution (g) 10.1 10.1 9.8 Mass vinegar added to reach endpoint (g) 12.8 14.3 12.2 Brand of household ammonia Wally Times scented ammonia Brand of distilled, white vinegar captain jacks special recipe Acidity of the distilled, white vinegar (marked on container) 5.0% Analysis: (Note: use factor-label analysis to help you with these calculations.) a. Calculate the moles of HC H,O, added to reach the endpoint and record the value in the Analysis Table. To make this calculation, use the mass of vinegar added, the concentration of HC HO, from the distilled vinegar bottle (e.g., 5% acidity » 5% HC H:O: by mass = 5 g HC,H:O: / 100 g vinegar), and the molar mass of HC H:O2. b. Calculate the moles of NH, that was added to the container from the household cleaning solution and record the value in the Analysis Table. This calculation is based on the mole-to-mole ratio of HC H,0, to NH, in the balanced reaction and the moles of HC:H:O; needed to reach the titration endpoint (calculated in part a). NH, (ag) - HC,H,0,(ag) O NH, "(@g) + C,H,0, (ag) c Calculate the mass of NH, that was added to the container from the household cleaning solution and record the value in the Analysis Table. Use the moles of NH, determined in part b and the molar mass of NH, to calculate this mass. d. Calculate the percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Use the mass of NH, determined in part c and the mass of household cleaning solution added to the clear container. e. Calculate the average percent composition of NH, (by mass) in the household cleaning solution and record the value in the Analysis Table. Analysis Table Trial 1 Trail 2 Trial 3 Moles of HC,H,0, to reach endpoint Moles of NH, added to container Mass of NH, added to container (g) Percent composition NH, (m/m) in household cleaning solution Average Percent composition NH, (m/m) in household cleaning solution

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