Review Notes

Review Notes - General Notes Everything is fair game...

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General Notes: Everything is fair game, including safety rules and procedures Final exams Tuesday, November 10 th at 3:30 in Chapman 211 Remember to go to Morehead labs and check-out at your time (check Blackboard) Bring you laptops…you will be using DataStudio to do some data analysis Bring a calculator…you won’t be able to use the one on your laptop Constants will be provided on the exam (i.e. gas constant, R) but equations will not be KNOW BOLDED TERMS IN LAB MANUALS Experiment 10 Gas law: PV=nRT, you can derive all the gas laws from this equation Boyle’s Law: P 1 V 1 = P 2 V 2 Gay-Lussac’s Law: P 1 /T 1 = P 2 /T 2 Direct versus Indirect (show graphs of Y vs. X and Y vs. 1/X) Absolute zero: temperature when gas has no pressure (P = 0), theoretical definition of 0 K (find by extrapolating linear regression of Temp vs. P (Abs zero at y-intercept) Example: Gas Laws.ds o Boyle’s Law Given Boyle’s runs plot (kPa vs. mL) Given density table and plot (299 K) Find R (L-atm/mol-K) Trial 1: 0.0825 Trial 2: 0.0827 o Gay-Lussac’s Law Given plot of runs (kPa vs. Temp (K)) Given density table and plot (room temp: 299 K) Volume of E-flask: 275.3 mL Find R Trial 1: 0.0921 Trial 2: 0.0938 o Absolute Zero Make Temp vs. Pressure plot Trial 1: -264 K Trial 2: -260 K Example: Gas Laws2.ds o Boyle’s Law Air temp: 296.15 K Trial 1: 0.0783 Trial 2: 0.0780 o Gay-Lussac’s Law Air temp: 296.15 K
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Trial 1: 0.0778 Experiment 11 I nter molecular forces versus intra molecular forces o Inter- (forces holding separate molecules together) Ion-dipole Dipole-dipole (including H + bonds)
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This document was uploaded on 11/04/2011 for the course CHEM 102 at UNC.

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Review Notes - General Notes Everything is fair game...

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