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Mass of a whole tablet: 3.2338g Mass of portion of tablet used Volume of flask Initial Pressure Maximum Pressure ΔΡ Trial 1 2.083g 138.5 mL 105.89 KPa 126.92 K Pa 21.03 Trial 2 2.054g 138.5 mL 104.81 KPa 125.27 KPq 20.46 Trial 3 2.061g 138.5 mL 105.23 кра 125.54 k Pa 20.31

Mass of a whole tablet: 3.2338g Mass of portion of tablet used Volume of flask Initial Pressure Maximum Pressure ΔΡ Trial 1 2.083g 138.5 mL 105.89 KPa 126.92 K Pa 21.03 Trial 2 2.054g 138.5 mL 104.81 KPa 125.27 KPq 20.46 Trial 3 2.061g 138.5 mL 105.23 кра 125.54 k Pa 20.31

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter5: Gases
Section: Chapter Questions
Problem 6QAP: A tank is filled with gas to a pressure of 875 mm Hg at 25C. The gas is transferred without loss to...
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Please calculate problems 2, 3, and 4 using the data table provided if needed. For problem 2 the moles of CO2 is 1.20 x 10^-3 mol
Mass of a whole tablet: 3.2338g Mass of portion of tablet used Volume of flask Initial Pressure Maximum Pressure ΔΡ Temperature Trial 1 2.0839 138.5 mL 105.89 KPa 126.92 K Pa 21.03 18.4°C Trial 2 2.0549 138.5mL 104.81 KPa [25.27 кра 20.46 18.3°C Trial 3 2.061g 138.5 mL 105.23 KPa 125.54 k Pa 20.31 18.3°C
Transcribed Image Text:Mass of a whole tablet: 3.2338g Mass of portion of tablet used Volume of flask Initial Pressure Maximum Pressure ΔΡ Temperature Trial 1 2.0839 138.5 mL 105.89 KPa 126.92 K Pa 21.03 18.4°C Trial 2 2.0549 138.5mL 104.81 KPa [25.27 кра 20.46 18.3°C Trial 3 2.061g 138.5 mL 105.23 KPa 125.54 k Pa 20.31 18.3°C
CALCULATIONS (Show one sample calculation in your lab notebook; ie, one trial) 1. Use the ideal gas law to determine the number of moles of carbon dioxide gas in the flask. For the pressure, use AP. 2. Now take the number of moles of CO₂ calculated in (1) and add to it the moles of 8.5mg of CO₂ per 5mL of acid solution, which is assumed to be dissolved in the solution. This is the total amount of carbon dioxide produced (per trial). 3. Use your result in (2) and the stoichiometry of the balanced equation to find the mass of NaHCO3. g NaHCO3: (Triall) (Trial 2) (Trial 3) 4. Use the results from (3) and the mass of the portion of tablet used to calculate the mass percentage of NaHCO3 in your Alka-Seltzer preparation. Also give the average and the relative range. % NaHCO3: Average: (Triall) (Trial 2) Relative Range: (Trial 3)
Transcribed Image Text:CALCULATIONS (Show one sample calculation in your lab notebook; ie, one trial) 1. Use the ideal gas law to determine the number of moles of carbon dioxide gas in the flask. For the pressure, use AP. 2. Now take the number of moles of CO₂ calculated in (1) and add to it the moles of 8.5mg of CO₂ per 5mL of acid solution, which is assumed to be dissolved in the solution. This is the total amount of carbon dioxide produced (per trial). 3. Use your result in (2) and the stoichiometry of the balanced equation to find the mass of NaHCO3. g NaHCO3: (Triall) (Trial 2) (Trial 3) 4. Use the results from (3) and the mass of the portion of tablet used to calculate the mass percentage of NaHCO3 in your Alka-Seltzer preparation. Also give the average and the relative range. % NaHCO3: Average: (Triall) (Trial 2) Relative Range: (Trial 3)
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