A Lab Report on CO2
CO2 Lab Report
Intro
Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room.
Experimental
One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A 1.5g piece of Alka-Seltzer was added to this mixture and all CO2 was allowed to escape. The mixture was filtered then added to a 50mL buret until full. The glass tube end of the rubber tubing was inserted about 2 inches in to the buret. Using a finger to cover the mouth of the buret, it was quickly inverted and placed into the water in the 600mL beaker. The water level was brought to 50mL by carefully adjusting the stopcock.
25mL of the prepared HCl solution was placed in a 125mL flask with a .5 to 1 gram piece of Alka-Seltzer. CO2 was allowed to escape then the neck/mouth of the flask were dried. The accurately measured .21 to .28 gram piece of Alka-Seltzer was added to the flask and then quickly stoppered and connected to the rubber tubing so that the CO2 was transferred to the buret. CO2 was allowed to collect for 5 minutes then a reading of the final level of the buret was taken. The temperature of the water and atmosphere of the room were recorded.
Results/Calculations
Volume of CO2 generated 36.4mL
Temperature of water 21.3 C
Atmosphere of room 29.3mmHg
Volume of room 16,511,040 in3
Mass of entire tablet 3.2603g
Mass of piece of tablet used 0.2715g
50mL – 13.6mL = 36.4mL
24ft x 49ft x 7.5ft = 16,511,040 in3
0.2715g = 3.2603g 1 tablet produces 437.1mL CO2
36.4mL x mL
1in3 = 16.4mL
16,511,040 in3 = 1006770.73mL
1006770.73mL / 437.1mL = 2303.3 tablets
nCO2 = pV = .03855atm*0.0364L = 0.00005747797 mol CO2 RT
Intro
Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room.
Experimental
One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A 1.5g piece of Alka-Seltzer was added to this mixture and all CO2 was allowed to escape. The mixture was filtered then added to a 50mL buret until full. The glass tube end of the rubber tubing was inserted about 2 inches in to the buret. Using a finger to cover the mouth of the buret, it was quickly inverted and placed into the water in the 600mL beaker. The water level was brought to 50mL by carefully adjusting the stopcock.
25mL of the prepared HCl solution was placed in a 125mL flask with a .5 to 1 gram piece of Alka-Seltzer. CO2 was allowed to escape then the neck/mouth of the flask were dried. The accurately measured .21 to .28 gram piece of Alka-Seltzer was added to the flask and then quickly stoppered and connected to the rubber tubing so that the CO2 was transferred to the buret. CO2 was allowed to collect for 5 minutes then a reading of the final level of the buret was taken. The temperature of the water and atmosphere of the room were recorded.
Results/Calculations
Volume of CO2 generated 36.4mL
Temperature of water 21.3 C
Atmosphere of room 29.3mmHg
Volume of room 16,511,040 in3
Mass of entire tablet 3.2603g
Mass of piece of tablet used 0.2715g
50mL – 13.6mL = 36.4mL
24ft x 49ft x 7.5ft = 16,511,040 in3
0.2715g = 3.2603g 1 tablet produces 437.1mL CO2
36.4mL x mL
1in3 = 16.4mL
16,511,040 in3 = 1006770.73mL
1006770.73mL / 437.1mL = 2303.3 tablets
nCO2 = pV = .03855atm*0.0364L = 0.00005747797 mol CO2 RT