Chemistry 14BL Fall 2004 Report Guidelines for Experiment 1 Pipet Calibration Pre lab Work I On line Technique Videos Resources For This Experiment Click on the title below to download the video requires Real Player 1 Laboratory Safety this video was shown on the first day of the lab 2 Use of a Pipet If you have trouble downloading the videos go to the following Web site and click on the appropriate title to download the video http oid ucla edu Webcast Chemistry 3 Click here for a simple review of significant figures 4 Click here to see pictures of common laboratory glassware used in Chemistry 14BL download time may be quite long if you are using dial up II Prelab Assignment questions Refer to your lab manual page 36 Read page 18 21 of the lab manual BEFORE you start working on these questions Compete the following questions ONLY You must show all work for FULL credit 2b 2d 2f 3 4b 4d 5 only for the assigned ones in question 4 6c III The Introductory Report material will include The title of the experiment A reference i e complete reference of the experiment including title of the lab manual author edition and page number of the experiment in the manual etc Include any changes to the procedure that you know you will make Note This quarter you will not calibrate the displacement pipet A short introduction Summarize in two or three sentences the goals of the experiment Outline the techniques that you will use in the experiment A brief flow chart summary of the key procedures of the experiment A data table to record the weights of the bottles before and after the water is transferred to them Note Start a NEW page in your notebook for this section The previous material will be turned in at the beginning of the period this page will be turned in at the end of the lab period Note MSDS information is NOT required for this experiment Post lab Work The post lab report for the Volumetric Pipet Calibration will include Calculations Calculate the true weights delivered for the 10 mL pipet follow the example on page 35 Calculate of the volume delivered follow example on page 35 Error Analysis Calculate of the relative average deviation RAD for the volume delivered by the pipet see example on page 20 21 Conclusions Summarize your results and comment on the RAD of the pipet volumes Practical Consideration Identify three actions that you can take to reduce your risk of a harmful accident in the chemistry laboratory
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