chem 1031 stoichiometric ratio. procedure put goggles and aprons on. equipment needed (per pair):...
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![Page 1: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/1.jpg)
CHEM 1031
Stoichiometric Ratio
![Page 2: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/2.jpg)
Procedure
PUT GOGGLES AND APRONS ON.
Equipment Needed (per pair):
• (2) 400 mL beakers
• (2) 100 mL graduated cylinders
• (1) desk thermometer
• (1) stirring rod
• (1) calorimeter cup (obtain from sideshelf)
![Page 3: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/3.jpg)
Procedure (Continued)
RECORD DATA IN INK, AND PUT NAME,PARTNER’S NAME, AND DATE ON FIRSTDATA SHEET.• Obtain 350 mL of the 0.50 M NaOCl and
0.50 M Na2SO3 solutions in separate 400 mL beakers. OPEN AND CLOSE CARBOY VALVES VERY CAREFULLY.
• “Guesstimate” 350 mL above the 325 mL mark.
![Page 4: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/4.jpg)
![Page 5: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/5.jpg)
Procedure (Continued)
• Put thermometer in one of the beakers and measure and record temperature, estimating to the nearest 0.1oC. This is the initial temperature (same for all seven runs).
• Set up ring stand, calorimeter cup, and thermometer thus:
![Page 6: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/6.jpg)
![Page 7: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/7.jpg)
Procedure (Continued)
FOR EACH RUN:
• Measure out prescribed volumes of NaOCl and Na2SO3 solutions using separate
100 mL graduated cylinders.
![Page 8: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/8.jpg)
![Page 9: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/9.jpg)
Procedure (Continued)
• Combine solutions in calorimeter cup and stir with glass stirring rod.
![Page 10: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/10.jpg)
![Page 11: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/11.jpg)
Procedure (Continued)
• Measure and record maximum temperature to the nearest 0.1oC.
• Pour wastes down drain.
![Page 12: CHEM 1031 Stoichiometric Ratio. Procedure PUT GOGGLES AND APRONS ON. Equipment Needed (per pair): (2) 400 mL beakers (2) 100 mL graduated cylinders (1)](https://reader030.vdocuments.net/reader030/viewer/2022032703/56649d375503460f94a10187/html5/thumbnails/12.jpg)
Procedure (Continued)
• Rinse calorimeter cup with tap water and return to sideshelf when done.