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DATA OBSERVATIONS – Ideal Constant Lab Hyrochloric Acid to the Eudiometer mark Mass of Mg, g (weight of Mg metal) Moles of Mg Moles of H2 Volume, H2 mL Volume, H2 L Temp Degree Celsius Temp Kelvin Barometric pressure inches of mercury Barometric pressure mmHg Vapor of Pressure mmHg Corrected Pressure, mmHg Corrected Pressure, atm Calculated R Value Avg. R Value, L-atm/mol-K True value of R % error of average R Determination 5.0 mL 0.02 g 19 Degrees C 30.16 inches

DATA OBSERVATIONS – Ideal Constant Lab Hyrochloric Acid to the Eudiometer mark Mass of Mg, g (weight of Mg metal) Moles of Mg Moles of H2 Volume, H2 mL Volume, H2 L Temp Degree Celsius Temp Kelvin Barometric pressure inches of mercury Barometric pressure mmHg Vapor of Pressure mmHg Corrected Pressure, mmHg Corrected Pressure, atm Calculated R Value Avg. R Value, L-atm/mol-K True value of R % error of average R Determination 5.0 mL 0.02 g 19 Degrees C 30.16 inches

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Purpose The purpose of this la demonstration is to experimentally determine the value of the ideal gas constant (X). The ideal gas law is wien PV-RI, where is the ideal gas constant. In this laboratory investigation, you will determine through an experiment a value of RO To do this, you will watch a lab demonstration video in which the chemist will generate and collect a known amount of hydrogen pas, generated from the reaction of magnetism with excess hydrochleic acid (HC) The moles of hydropem can be calculated strictionically from dhe mass of magsimused. You will measure the volume and temperature of the gas as described in the procedure. Lastly, the value for the pressure of hydrogen gas will be obtained by applying our knowledge of Dalton's law Pao+Pa) The bydroges gas will be collected over water, thus the gas in the collection tube will be a mixture of water vapor and hydrope gas Values for 2 Pamand Proo can be looked up celine, allowing us to calculate Py. Once the values for P. V. I and are known, the value for can be calculated Probab 1) White a balanced chemical equation, including state symbols, for the reaction betwee main and aqueous hydrochloric acid (HC) Mg-C-My-H Safety Hydrochloric acid is comive. In the future, if you work in a lab, you should wear safety glasses and be your hands if you come in contact with acid. If you ever werk in a lab in a school seting, you should al your teacher if you spill acid on your skin, y or clothing. Do not atempt to run this lab without the presence of a chenisty mutritiase, Maturiths and Tquipmut: Magnee Aqueous HC1 Eudiometer (agas collection tube) Sering Deind water Balance (-0.01 precision) Theme A small (300ml) beaker A large (1000) bek A ruler and scissons (to cut the Mgibbox) A large bucket (nt somk) of water sa Predictions On Accia 14) Clean up the work area and wash your hands. water vapor pressure temp 'C 0.0 5.0 10.0 12.5 15.0 15.5 16.0 16.5 17.0 17.5 ▬▬▬▬ pressure mm Hg 4.6 6.5 9.2 10.9 12.8 13.2 13.6 14.5 15.0 temp pressure 'C mm Hg 18.0 15.5 16.0 16.5 17.0 17.5 18.1 18.6 19.2 19.8 20.4 18.5 19.0 19.5 20,0 20.5 21.0 21.5 22.0 22.5 temp pressure 'C mm Hg 23.0 21.1 23.5 21.7 24.0 22.4 24.5 25.0 26.0 27.0 28.0 29.0 30.0 23.1 23.8 25.2 26,7 28.3 30.0 31.8 Procedure 1) Uing a balance (rads to 2 decimal places), determine the mass of a piece of magnesin metal approximately 2 cm in length. Record the man of the Mg 2) The athin piece of string around the one of the magnesium nibbon and bend it slightly so it will f in the gas collecting the (edit) 3) Use a small beaker and a free to add approximately 5 mL of HCl solution to the gas collecting tube Rise the fame and beaker 4 GENTLY El te te collecting the waith water ky drizzling the water down the side of the pas collecting tube to avoid ming performed carefully, the HCI will stay on the bottom due to its greater deity than water 5) Place the ribbon to the tube (poist side is) so that it remains in place and have the string on the outside of the tube 6) Place your thumb or finger over the top of the gas collecting tube and invert the tobe into a large beaker of water Press the tube gay to the bottom of the beaker so the string is held is place and the Me tibbon does not lost to the top of the he. Make sure note of the magnesium is outside of 7) Notice the flow of the chloric acid down the gas collecting tube. Note any signs of a chemical 1) When the Mbon has been completely used up, gently tap the sides of the gas collecting beto release trapped gas bubbles 9) Put your finger on the bottom of the tube and trander the tube to a bucket or sink of water. Let the gas collecting tube sit for 5 minutes to allow it to come to the same temperature as the water. 10) Once 5 minutes have passed the tube so the level of the water in the tube and the level of the water in the bucket are the same. Record the velme of the gas in the cylinder by reading the graduation on the endometer 11) Unga theme, read and record the temperature of the liquid in the bucket (this is the temperation of the par) 12) Record the mospheric pressure (R) in the lab It will be stated in the video. 13) After reading the volume of the pas in the gas collecting the the contents may be empted into the sink Rinse the tube several times with water using a beaker to fill the tube (the one will not ft under the face 14) Clean up the work area and wash your hands temp 'C 35.5 40.0 50.0 60.0 70.0 80.0 90.0 95.0 100.0 pressure mm Hg 42.2 55.3 92.5 149.4 233.7 355.1 525.8 633.9 760.0 Video Lab Demonstration: https://www.youtube.com/watch?v=hWS(KZBQOMA Analysis 1) Calculate the pressure of the hydrogen in the eudiometer (in units of mm Hg), using Dalton's Law (Patio - Pa ± Pico). Refer to the attached table to determine the pressure of the water vapor at the measured temperature. 2) Calculate the theoretical yield, in moles, of hydrogen gas produced in the reaction. 3) Using the values for pressure, temperature, yolume and moles of hydrogen, determine the value of the gas law constant, R. Include units. 4) Calculate the % error for your experimentally determined value of R. Focus
Transcribed Image Text:Purpose The purpose of this la demonstration is to experimentally determine the value of the ideal gas constant (X). The ideal gas law is wien PV-RI, where is the ideal gas constant. In this laboratory investigation, you will determine through an experiment a value of RO To do this, you will watch a lab demonstration video in which the chemist will generate and collect a known amount of hydrogen pas, generated from the reaction of magnetism with excess hydrochleic acid (HC) The moles of hydropem can be calculated strictionically from dhe mass of magsimused. You will measure the volume and temperature of the gas as described in the procedure. Lastly, the value for the pressure of hydrogen gas will be obtained by applying our knowledge of Dalton's law Pao+Pa) The bydroges gas will be collected over water, thus the gas in the collection tube will be a mixture of water vapor and hydrope gas Values for 2 Pamand Proo can be looked up celine, allowing us to calculate Py. Once the values for P. V. I and are known, the value for can be calculated Probab 1) White a balanced chemical equation, including state symbols, for the reaction betwee main and aqueous hydrochloric acid (HC) Mg-C-My-H Safety Hydrochloric acid is comive. In the future, if you work in a lab, you should wear safety glasses and be your hands if you come in contact with acid. If you ever werk in a lab in a school seting, you should al your teacher if you spill acid on your skin, y or clothing. Do not atempt to run this lab without the presence of a chenisty mutritiase, Maturiths and Tquipmut: Magnee Aqueous HC1 Eudiometer (agas collection tube) Sering Deind water Balance (-0.01 precision) Theme A small (300ml) beaker A large (1000) bek A ruler and scissons (to cut the Mgibbox) A large bucket (nt somk) of water sa Predictions On Accia 14) Clean up the work area and wash your hands. water vapor pressure temp 'C 0.0 5.0 10.0 12.5 15.0 15.5 16.0 16.5 17.0 17.5 ▬▬▬▬ pressure mm Hg 4.6 6.5 9.2 10.9 12.8 13.2 13.6 14.5 15.0 temp pressure 'C mm Hg 18.0 15.5 16.0 16.5 17.0 17.5 18.1 18.6 19.2 19.8 20.4 18.5 19.0 19.5 20,0 20.5 21.0 21.5 22.0 22.5 temp pressure 'C mm Hg 23.0 21.1 23.5 21.7 24.0 22.4 24.5 25.0 26.0 27.0 28.0 29.0 30.0 23.1 23.8 25.2 26,7 28.3 30.0 31.8 Procedure 1) Uing a balance (rads to 2 decimal places), determine the mass of a piece of magnesin metal approximately 2 cm in length. Record the man of the Mg 2) The athin piece of string around the one of the magnesium nibbon and bend it slightly so it will f in the gas collecting the (edit) 3) Use a small beaker and a free to add approximately 5 mL of HCl solution to the gas collecting tube Rise the fame and beaker 4 GENTLY El te te collecting the waith water ky drizzling the water down the side of the pas collecting tube to avoid ming performed carefully, the HCI will stay on the bottom due to its greater deity than water 5) Place the ribbon to the tube (poist side is) so that it remains in place and have the string on the outside of the tube 6) Place your thumb or finger over the top of the gas collecting tube and invert the tobe into a large beaker of water Press the tube gay to the bottom of the beaker so the string is held is place and the Me tibbon does not lost to the top of the he. Make sure note of the magnesium is outside of 7) Notice the flow of the chloric acid down the gas collecting tube. Note any signs of a chemical 1) When the Mbon has been completely used up, gently tap the sides of the gas collecting beto release trapped gas bubbles 9) Put your finger on the bottom of the tube and trander the tube to a bucket or sink of water. Let the gas collecting tube sit for 5 minutes to allow it to come to the same temperature as the water. 10) Once 5 minutes have passed the tube so the level of the water in the tube and the level of the water in the bucket are the same. Record the velme of the gas in the cylinder by reading the graduation on the endometer 11) Unga theme, read and record the temperature of the liquid in the bucket (this is the temperation of the par) 12) Record the mospheric pressure (R) in the lab It will be stated in the video. 13) After reading the volume of the pas in the gas collecting the the contents may be empted into the sink Rinse the tube several times with water using a beaker to fill the tube (the one will not ft under the face 14) Clean up the work area and wash your hands temp 'C 35.5 40.0 50.0 60.0 70.0 80.0 90.0 95.0 100.0 pressure mm Hg 42.2 55.3 92.5 149.4 233.7 355.1 525.8 633.9 760.0 Video Lab Demonstration: https://www.youtube.com/watch?v=hWS(KZBQOMA Analysis 1) Calculate the pressure of the hydrogen in the eudiometer (in units of mm Hg), using Dalton's Law (Patio - Pa ± Pico). Refer to the attached table to determine the pressure of the water vapor at the measured temperature. 2) Calculate the theoretical yield, in moles, of hydrogen gas produced in the reaction. 3) Using the values for pressure, temperature, yolume and moles of hydrogen, determine the value of the gas law constant, R. Include units. 4) Calculate the % error for your experimentally determined value of R. Focus
DATA OBSERVATIONS - Ideal Constant Lab Hyrochloric Acid to the Eudiometer mark Mass of Mg, g (weight of Mg metal) Moles of Mg Moles of H2 Volume, H2 mL Volume, H2 L Temp Degree Celsius Temp Kelvin Barometric pressure inches of mercury Barometric pressure mmHg Vapor of Pressure mmHg Corrected Pressure, mmHg Corrected Pressure, atm Calculated R Value Avg. R Value, L-atm/mol-K True value of R % error of average R Determination 5.0 mL 0.02 g 19 Degrees C 30.16 inches
Transcribed Image Text:DATA OBSERVATIONS - Ideal Constant Lab Hyrochloric Acid to the Eudiometer mark Mass of Mg, g (weight of Mg metal) Moles of Mg Moles of H2 Volume, H2 mL Volume, H2 L Temp Degree Celsius Temp Kelvin Barometric pressure inches of mercury Barometric pressure mmHg Vapor of Pressure mmHg Corrected Pressure, mmHg Corrected Pressure, atm Calculated R Value Avg. R Value, L-atm/mol-K True value of R % error of average R Determination 5.0 mL 0.02 g 19 Degrees C 30.16 inches
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