Problem Set 1 PDF
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This document contains chemistry problems involving chemical reactions and equilibrium calculations. It includes questions requiring calculations and an understanding of the concepts of chemical equilibrium, along with the calculation of the mass and percentage composition of mixtures.
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Problem Set 1 Due: 1/11 20 points 1. (5 points) Consider the following reaction: 2𝑆𝑂! (𝑔) + 𝑂! (𝑔) ↔ 2𝑆𝑂" (𝑔) Keq = 100 With the initial masses of 20 g SO2, 13 g O2, and 25 g SO3 in a 5.0 L container, which way will the reaction progress? 2. (8 points) Consider the follow...
Problem Set 1 Due: 1/11 20 points 1. (5 points) Consider the following reaction: 2𝑆𝑂! (𝑔) + 𝑂! (𝑔) ↔ 2𝑆𝑂" (𝑔) Keq = 100 With the initial masses of 20 g SO2, 13 g O2, and 25 g SO3 in a 5.0 L container, which way will the reaction progress? 2. (8 points) Consider the following reaction: cis-C2H2F2 « trans-C2H2F2 Keq = 0.500. If 1 mol cis-C2H2F2 is mixed with 1 trans-C2H2F2 in a volume of 10-Liters at 623 Kelvin, what would happen to each of these isomers when the mixture is allowed to equilibrate? Note: Equilibrium mixtures of isomers typically contain more of the cis isomer than the trans isomer. Hint: Fill in this table Substance Initial Amount Equilibrium amount Equilibrium conc. amount Produced (mol) (initial amount + amount produced)mol (Equilibrium amount/volume)mol/L cis-C2H2F2 x mol trans-C2H2F2 -x mol x= [cis-C2H2F2] = [trans-C2H2F2] = 3. (7 points) Two methanol-water mixtures are contained in separate flasks. The first mixture contains 40.0 wt% methanol and the second contains 70.0 wt% methanol. The product stream contains a mixture of methanol and water. If 200 g of the first mixture is combined with 150 g of the second, what are the mass and % composition of each of the products?
