exp5_ld - Ca 3 (PO 4 ) 2 (s) 3. Could you use a...

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Name Your name Lab Day and Time TA TA's name Room Room C HEMISTRY 11L L EARNING D EVICE EXPT. Conductometric Titration 5 For calculations, you must show all of your work and include appropriate units to receive full credit. Answers to the discussion questions should be in the form of complete sentences. 1. a) What scientific principle or law is used in the process of balancing chemical equations? (1 pt) Answer b) Is the following chemical equation, as written, consistent with the principle or law stated above? Why or why not? (2 pts.) 2 HNO 3 (aq) + Mg(OH) 2 (aq) H 2 O (l) + Mg(NO 3 ) 2 (aq) Answer 2. Balance the following equations (4 pts): a) Pb(NO 3 ) 2 (aq) + Na 2 S (aq) PbS (s) + NaNO 3 (aq) b) NaOH (aq) + K 2 SO 4 (aq) Na 2 SO 4 (aq) + KOH (aq) c) CuBr 2 (aq) + NaNO 3 (aq) Cu(NO 3 ) 2 (aq) + NaBr (aq) d) (NH 4 ) 3 PO 4 (aq) + CaCl 2 (aq) NH 4 Cl (aq) +
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Unformatted text preview: Ca 3 (PO 4 ) 2 (s) 3. Could you use a conductometric titration to follow the progress of any of the reactions in question 2? If so, which reaction(s) could you follow using this method and why? (3 pts) Answer 4. Given the following mole ratios, write the empirical formula for each compound. (4 pts) a) 2 mol Cl/1 mol Mg Empirical Formula b) 3 mol Na/1 mol N Empirical Formula c) 1.5 mol O/1 mol Fe Empirical Formula d) 2.5 mol O/1 mol N Empirical Formula 5. Describe the complete procedure for this experiment following the guidelines for writing experimental procedures. You DO NOT need to include a description of interface setup, software setup or display setup (B-D of the procedure) (6 pts). Answer...
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This note was uploaded on 06/10/2010 for the course CHEM 101L taught by Professor Austell during the Spring '08 term at UNC.

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