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#3 Verification of the Ideal Gas Law

#3 Verification of the Ideal Gas Law - × = 0 00107molO2...

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Aaron King 660556233 Section 2 Wednesday, September 19, 2007 #3 Verification of the Ideal Gas Law Table 1 Percent Mass H 2 O Mass yeast Vi Vf V 3% 3.5183g 0.0715g 6.85mL 34.68mL 27.84mL ? 3.5056g 0.0713g 7.72mL 32.72mL 25.00mL 1. . × × . = . 3 5183gH2O2soln 3gH2O2100gH2O2soln 1molH2O234 02gH2O2 0 003102molH2 O2 2. . × / = . 0 003102molH2O2 1 2molO21molH2O2 0 001551molO2 3. = + Ptotal PO2 Pwater = . ×. + . ×. Ptotal 30 37inHg 03342atm1inHg 21 1torr 001316atm1torr = . Ptotal 1 04atm = n PVRT = . . . + . × n 1 04atm27 84mL0 0821LatmmolK23℃ 273 15 1L1000mL = . n 0 00119molO2 The expected moles of O 2 was 0.001551, but the calculated amount produced was 0.00119. These are not very close, but do still verify the ideal gas law. 4. = n PVRT = . . . + . × n 1 04atm25 00mL0 0821LatmmolK23℃ 273 15 1L1000mL = . n 0 00107molO2 5.
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King 2 . × . × . = . 0 00107molO2
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Unformatted text preview: . × . = . 0 00107molO2 1molH2O20 5molO2 34 02gH2O21molH2O2 0 0728gH2O2 % = . . × % H2O2 0 0728gH2O23 5056gH2O2soln 100 % = . % H2O2 2 08 6. By feeling the outside of the flask, we introduce an outside factor. If one feels the outside of the flask, the temperature of the flask changes. When the flask changes temperature, the water inside the flask will change temperature. If the water changes temperature, the Ideal Gas Law is compromised. Also, if one touches the flask enough, the vapor pressure of water may increase higher than room temperature. Though it is better for the experiment if the flask were not touched, it does not affect the results of the experiment dramatically....
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