Lab 3: Determining the Molar Volume of a Gas Instructions: Answer the following questions in your laboratory notebook. T

[answerhappygod]

Lab 3 Determining The Molar Volume Of A Gas Instructions Answer The Following Questions In Your Laboratory Notebook T 1 (153.74 KiB) Viewed 119 times

Lab 3: Determining the Molar Volume of a Gas Instructions: Answer the following questions in your laboratory notebook. The questions must be copied into the laboratory notebook. The following scenarios represent common mistakes that could have occurred during the experiment. Describe how these mistakes would affect your final results. As you consider how your results would change, you should answer the following leading questions: 1. What measurement (specifically) is going to change, and will it increase or decrease? 2. What calculations is this measurement used in and how will it affect the values of those calculations? 3. How do these calculation changes affect the values of your final data/conclusion? You should use these 3 leading questions to fully describe how your final results will be affected. You may bullet point the cause an effect steps through the end of the experiment. Assume that each of these scenarios are mistakes made by different students. Do not try to find out what would happen if all of these things happened to one unfortunate student! Post-lab Questions: 1. When the student was setting up the equipment, there were air bubbles left over in the burette before the reaction. 2. When the student was setting up the equipment, they dropped the copper wire cage containing the magnesium ribbon before they were ready to collect the gas. 3. When the student was running the reaction, they did not swirl the filter flask containing the reaction and only allowed the reaction to run for 2 minutes. 4. When the student was setting up the equipment, they did not realize that there was a small hole in the hose they used to run from the filter flask to the burette and ran the reaction using the faulty hose. 5. When the students weighed their magnesium, they didn't zero the balance beforehand. They did not realize that the balance read "0.030 g" before they placed their magnesium on the balance and recording the mass. 6. When the student set up the equipment, they did not properly secure the rubber stopper to the filter flask. Their rubber stopper was slightly too small and did not form a good seal. 7. The student never recorded the temperature of the water bath. In order to finish their lab in time, the assumed the temperature of the water bath was room temperature (22°C). In reality, the winter weather meant that the room was colder than average and therefore the temperature of the water was 19°C.