in lab 1 - NaCl HCl NaOH H 2 O 4 Which experiments from 1-3...

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1. Data Tables Data Table A. Initial concentrations of HCl, H 3 PO 4 and NaOH [HCl] 1.5 M [H 3 PO 4 ] 1.0 M [NaOH] 1.5 M Data Table B. Temperature data for combinations of NaOH and HCl(aq) Expt # mL NaOH mmol NaOH ml H 2 O mL HCl mmol HCl Initial T, °C Final T, °C T, °C 1 20 30. 20 10 15. 22.37 24.79 2.42 2 20 30. 10 20 30. 22.47 29.12 6.65 3 20 30. 0 30 45. 22.57 29.72 7.15 Data Table C. Temperature data for combinations of NaOH and H 3 PO 4 Expt # mL NaOH mmol NaOH ml H 2 O mL H 3 PO 4 mmol H 3 PO 4 Initial T, °C Final T, °C T, °C 4 15 23. 30 15 15. 22.31 26.50 4.19 5 30 45. 15 15 15. 22.25 28.80 6.55 6 45 68. 0 15 15. 22.30 28.42 6.12
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2. Construct a reaction table for experiment #1, the addition of 20 mL each of NaOH and H 2 O with 10 mL of HCl. All entries should be in millimoles . You should enter 0 for the initial NaCl concentration. HCl(aq) + NaOH(aq) NaCl(aq) + H 2 O initial 15 30. 0 ---------- change ( ) -15 -15 15 ---------- final 0 15 15 ---------- 3. For experiment #1, which is the limiting reagent?
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Unformatted text preview: NaCl HCl NaOH H 2 O 4. Which experiments from 1-3 have the same change in temperature? (Select all that are correct.) 1 2 3 5. For the experiments from 1-3 with the same temperature change, what other parameters are the same? (Select all that are correct.) mmol HCl initial concentration of HCl mL H 2 O initial concentration of NaOH mmol NaOH total mL of solution 6. Which experiments from 4-6 have the same change in temperature? (Select all that are correct.) 4 5 6 7. For the experiments from 4-6 with the same temperature change, what other parameters are the same? (Select all that are correct.) initial concentration of H 3 PO 4 mmol NaOH initial concentration of NaOH mL H 2 O total mL of solution mmol H 3 PO 4...
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This note was uploaded on 03/18/2011 for the course CHEM 202 taught by Professor Feducia during the Spring '09 term at N.C. State.

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in lab 1 - NaCl HCl NaOH H 2 O 4 Which experiments from 1-3...

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