Gas Reaction Stoichiometry.docx - 1 Ani Keliiheleua Gen...

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1 Ani Keliiheleua Gen Chem Lab 3 Dec. 2019 Gas Reaction Stoichiometry Ideal Gas Law states that pressure, volume, molar mass, and temperature can all be used to solve for one another. This is demonstrated by the equation PV = nRT where R = 0.08206 L×atm mol×K , a constant. This equation allows chemists to solve for any of the missing variables. Chemists also utilize Dalton’s Law of Partial Pressure, which states that P total = P 1 + ¿ P 2 . The goal of this investigation is to understand the concentration of hydrogen peroxide in a hydrogen peroxide solution, which contains both H 2 O and O 2 . This indicates that P total = P H 2 O + P O 2 . Using reaction stoichiometry, chemists can solve for the molar mass of a substance in a compound and use this information in the equations given above. The reaction in this investigation is a disproportionation reaction of the hydrogen peroxide solution in which the reaction is catalyzed by an enzyme called catalase. Organisms use catalase to protect their own cells from oxidative damage that peroxides can cause. The catalase in this reaction is baker’s yeast. The yeast will begin the dissociation of the hydrogen peroxide solution. Rather starting with the known amount of the reactant, students will calculate the

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