2800lab1 - 34.78 29.86 32.68 32.66 #3 5.04 34.60 29.09...

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Brittney Brown September 22, 2010 Chem 2800/L Measured mass KHP x Molecular weight KHP x Mole ratio x Molarity NaOHx = mL Expected Volumes of Titration for NaOH ÷ = Measured mass KHP x Molecular weight KHP x Mole ratio Liters NaOH Molarity NaOH Volume delivered NaOH x Molarity NaOH x Mole Ratio x Molecular weight KHP ÷ %= % Measured mass unknown x 100 wt of KHP . . . 0 610g KHP x 1 mol KHP204 22g x 1 mol NaOH1 mol KNP x L NaOH0 1 mol x - = . mL10 3L 32 22mL NaOH . . ÷ . 0 610g KHP x 1 mol KHP204 22 g x 1 mol NaOH1 mol KHP 0 02998L = . NaOH 0 0996M NaOH . . . 0 02234L NaOH x 0 0987 mol NaOHL x 1 mol KHP1 mol NaOH x 204 22g ÷ . %= . % KHPmol 0 895g unknownx 100 50 3 wt
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Table 1 Blank Start (mL) End (mL) Expected Volume (mL) Actual Volume (mL) 2.20 2.22 - 0.02 Minus Blank NaOH standard #1 2.22 32.22 32.22 30.00 29.98 #2 2.10
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Unformatted text preview: 34.78 29.86 32.68 32.66 #3 5.04 34.60 29.09 29.56 29.54 #4 1.38 31.22 29.23 29.84 29.82 Table 2. Blank Start (mL) End (mL) Actual Volume (mL) 2.20 2.22 0.02 Minus Blank Unknown Code 17 #1 3.02 25.38 22.36 22.34 #2 0.04 22.18 22.14 22.12 #3 22.18 44.10 21.92 21.90 #4 23.20 46.20 23.00 22.98 Table 3. Erlenmeyer flask KHP (pure) (g) Calculated Morality of Average Stdev NaOH Morality #1 0.610 0.0996 0.0987 0.0007 #2 0.658 0.0987 #3 0.594 0.0985 #4 0.597 0.0980 Table 4. Erlenmeyer flask Unknown Sample (g) Wt% of KNP Average wt% Stdev #1 0.895 50.3 50.00 1.0 #2 0.900 49.5 #3 0.900 49.0 #4 0.901 51.4 Introduction: Experimental: Data: Results and Calculations: Discussion: Conclusion: Reference: Acknowledgments: Appendix...
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This note was uploaded on 02/03/2011 for the course CHEM 2800 taught by Professor Staff during the Fall '08 term at Kennesaw.

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2800lab1 - 34.78 29.86 32.68 32.66 #3 5.04 34.60 29.09...

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