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Stoichiometry: Loss of CO 2

Stoichiometry: Loss of CO 2. General Chemistry 101/102 Laboratory Manual University of North Carolina at Wilmington. Stoichiometry: Loss of CO 2. Purpose. To apply the concept of limiting reactant to determine the stoichiometry of a reaction using the method of continuous variation.

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Stoichiometry: Loss of CO 2

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  1. Stoichiometry: Loss of CO2 General Chemistry 101/102Laboratory ManualUniversity of North Carolina at Wilmington

  2. Stoichiometry: Loss of CO2 • Purpose • To apply the concept of limiting reactant to determine the stoichiometry of a reaction using the method of continuous variation. • Safety Considerations • You will be using 3 M H2SO4 (sulfuric acid) in this experiment. This can cause severe chemical burns to your skin and burn holes in your clothes. Wipe up any spilled H2SO4 immediately with wet paper towels. • All reagents used in this experiment can be safely poured down the drain. Flush with plenty of water.

  3. Pour all of the H2SO4 into the flask containing the Na2CO3. After 3 minutes, weigh the flask again to determine the mass of the CO2(g) evolved. Na2CO3(s) + H2SO4(aq) Na2SO4(aq) + H2O(l) + CO2(g) Stoichiometry: Loss of CO2 • Procedure • Your instructor will assign you a set of trials to perform. • For each trial, weigh the appropriate amount of Na2CO3 into a pre-weighed, clean, dry flask. • Measure out approximately 2.68 g of H2SO4 in a small, dry beaker.

  4. mol Na2CO3 mol H2SO4 mol CO2 0.0019 0.0040 0.0081 0.012 0.016 0.020 0.024 0.008 0.008 0.008 0.008 0.008 0.008 0.008 0.002 0.004 0.008 0.008 0.008 0.008 0.008 stoichiometric equivalence point mol CO2 produced Na2CO3(s) + H2SO4(aq) Na2SO4(aq) + H2O(l) + CO2(g) mol Na2CO3 used Stoichiometry: Loss of CO2 • Analysis

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