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CHEM 1111 Experiment 8 Decomposition of Hydrogen Peroxide Report Sheet Name: Section: Score: 2 H2O2(aq) 2 H2O(aq) + O2(g) KI (cat.) Data: INCLUDE UNITS!!! Barometer: 760.5 torr H2O2 solution Trial 1 Trial 2 A Mass of 10 mL grad cylinder with H2O2 solution 32.061 g 31.470 g B Mass of empty 10 mL grad cylinder 27.057 g 26.970 g C Initial gas volume reading 16.1 mL D Final gas volume reading 56.1 mL 41.5 mL E Temperature (°C) 21 21 F Vapor pressure of water (from Table 8-1) 18.6 torr 18.6 torr Calculations: INCLUDE UNITS AND SHOW WORK (attach scratch paper or use back side of the page)!!! Trial 1 Trial 2 G Mass of H2O2 solution used (A-B) 5.004 g 5 g H Volume of gas collected, in mL (D-C) 40 mL 41.5 mL I Volume of gas collected, in L J Partial pressure of O2 in torr K Partial pressure of O2 in atm (barometric pressure - F) L Temperature (K) M Number of moles of O2 formed (use PV=nRT eqn) N Number of moles of H2O2 consumed (M2) O Mass of H2O2 consumed (molar mass = 34.02 g/mol) P Mass percent H2O2 in solution (O/G)100 Q Average mass % H2O2

          CHEM 1111 Experiment 8 Decomposition of Hydrogen Peroxide Report Sheet Name: Section: Score: 2 H2O2(aq) 2 H2O(aq) + O2(g) KI (cat.) Data: INCLUDE UNITS!!! Barometer: 760.5 torr H2O2 solution Trial 1 Trial 2 A Mass of 10 mL grad cylinder with H2O2 solution 32.061 g 31.470 g B Mass of empty 10 mL grad cylinder 27.057 g 26.970 g C Initial gas volume reading 16.1 mL D Final gas volume reading 56.1 mL 41.5 mL E Temperature (°C) 21 21 F Vapor pressure of water (from Table 8-1) 18.6 torr 18.6 torr Calculations: INCLUDE UNITS AND SHOW WORK (attach scratch paper or use back side of the page)!!! Trial 1 Trial 2 G Mass of H2O2 solution used (A-B) 5.004 g 5 g H Volume of gas collected, in mL (D-C) 40 mL 41.5 mL I Volume of gas collected, in L J Partial pressure of O2 in torr K Partial pressure of O2 in atm (barometric pressure - F) L Temperature (K) M Number of moles of O2 formed (use PV=nRT eqn) N Number of moles of H2O2 consumed (M*2) O Mass of H2O2 consumed (molar mass = 34.02 g/mol) P Mass percent H2O2 in solution (O/G)*100 Q Average mass % H2O2

CHEM 1111 Experiment 8 Decomposition of Hydrogen Peroxide Report Sheet Name: Section: Score: 2 H2O2(aq) 2 H2O(aq) + O2(g) KI (cat.) Data: INCLUDE UNITS!!! Barometer: 760.5 torr H2O2 solution Trial 1 Trial 2 A Mass of 10 mL grad cylinder with H2O2 solution 32.061 g 31.470 g B Mass of empty 10 mL grad cylinder 27.057 g 26.970 g C Initial gas volume reading 16.1 mL D Final gas volume reading 56.1 mL 41.5 mL E Temperature (°C) 21 21 F Vapor pressure of water (from Table 8-1) 18.6 torr 18.6 torr Calculations: INCLUDE UNITS AND SHOW WORK (attach scratch paper or use back side of the page)!!! Trial 1 Trial 2 G Mass of H2O2 solution used (A-B) 5.004 g 5 g H Volume of gas collected, in mL (D-C) 40 mL 41.5 mL I Volume of gas collected, in L J Partial pressure of O2 in torr K Partial pressure of O2 in atm (barometric pressure - F) L Temperature (K) M Number of moles of O2 formed (use PV=nRT eqn) N Number of moles of H2O2 consumed (M*2) O Mass of H2O2 consumed (molar mass = 34.02 g/mol) P Mass percent H2O2 in solution (O/G)*100 Q Average mass % H2O2

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