I need the correct calculations to these set of problems.
ENCH 215 Hmwk 05 REQUIRED: Include this coversheet as the first page of your work Name: ____________________________ Section: ___________________________ ENCH 215/215H – Chemical Engineering Analysis, Fall 2021 Homework 5 Due: Tuesday 10/5/21 by 11:59pm via Blackboard as one pdf file Total problem set points possible: 15 Scales to 1/13th of total homework percentage points (1 out of 13 homeworks) Read FRB FRB 4.6-4.7e. FRB 4.7f-g. Here are the major learning objectives covered by this homework: Problem number Problem set points possible Problem set points earned 1 3 _____________________ 2 3 _____________________ 3 3 _____________________ 4 3 _____________________ 5 3 _____________________ Total: 15 _____________________ Percentage: _________________ ____ XP points: _____________________ Optional XP (5 pts each) can be found at the end of this handout. Submit XP work with this homework. For additional preparation to solve these problems, see the following LearnChemE Videos Videos #22-26 and at #28-36 https://www.youtube.com/playlist?list=PLD4476BAFA5A65111 https://www.youtube.com/playlist?list=PLD4476BAFA5A65111 1. The following reactions pertain to the chemistry of aspirin (acetylsalicylic acid) synthesis. salicylic acid + acetic anhydride → acetylsalicylic acid + acetic acid Rxn 1 (salicylic acid)n → polysalicylic acid with n monomers + (n-1) H2O Rxn 2 where salicylic acid is C7H6O3 (MW 138), acetic anhydride is C4H6O3 (MW 102), acetylsalicylic acid is C9H8O4 (MW 180), acetic acid is C2H4O2 (MW 60), and polysalicylic acid is assumed to be -(C9H6O3)-n with n = 10 (assumed MW 180,000). The species flow rates in the outlet stream are tabulated below. The feed only consists of salicylic acid and acetic anhydride. Using a molecular species balance, calculate a) through e). Please use the letter codes listed in the table to represent the species. Species (code) mol/hr HINT: You can consider Rxn 2 as acetylsalicylic acid (A) 5 10 salicylic acid → 1 polysalicylic acid + 9 H2O salicylic acid (B) 141 acetic anhydride (C) 600 acetic acid (D) 5 polysalicylic acid (E) 3 Water (W) a) What are the inlet flow rates (mol/hr) and compositions (mol%)? b) What is the fractional conversion of salicylic acid to acetylsalicylic acid? c) What was the selectivity of acetylsalicylic acid relative to polysalicylic acid? d) What was the yield of acetylsalicylic acid? e) What was the extent of reaction for each reaction? 2. One method to “capture carbon” from a waste stream is to use a metal catalyst to convert CO2 to cyclic organic carbonates, which are used as monomers to synthesize polymers, fuel additives, battery electrolytes, and high-boiling point solvents. One such reaction is the following: + CO2 ---> where C3H3ClO (MW 92.5) C4H3ClO3 (MW 134.5) Code: C3 Code: C4 One reactor inlet is composed of 1 mol/hr of C3H3ClO. The other reactor inlet is composed of 25 mol% CO2 and the balance air. The CO2 supplied is 20% excess than theoretically required. The reactor has one outlet stream. a) Calculate the flow rate (kg/hr) of the CO2/air inlet. b) Calculate the composition (mol %) of the outlet stream if 60% of the C3H3ClO is consumed in the reaction. 3. Ethanol can be converted to ethylene to produce a desired product. Ethanol (C2H5OH) is fed to a reactor at 10 mol/hr. The reactor outlet contains ethylene (C2H4), water, acetaldehyde (C2H4O), hydrogen and butyne (C4H6). The following reactions are thought to occur in this system: Rxn 1: C2H5OH → C2H4 + H2O Rxn 2: C2H5OH → C2H4O + H2 Rxn 3: C2H4 + C2H4O → C4H6 + H2O If the reactor outlet contains 2 mol/hr butyne, 2 mol/hr acetaldehyde and 5 mol/hr water, find the remaining outlet flow rates (mol/hr). 4. The equilibrium reaction between elemental carbon and water to form carbon dioxide and hydrogen has an equilibrium constant (K) at 1250 K in the form of: K(1250 K) = 0.301 = [(yCO2)(yH2)] / [(yC)(yH2O)] Calculate the flow rate (mol/hr) of each product if a reactor operating at 1250 K is fed 10 mol/hr of elemental carbon and 20 mol/hr water. XP8. A fuel cell is an open system into which fuel and air are fed, and out of which come electricity and waste products. The figure to the right is a sketch of a fuel cell in which a continuous flow of methane (CH4) and air produces the electricity plus CO2 and H2O. Special membranes and catalysts are needed to promote oxidation of CH4. Based on the figure, calculate the composition (mol fraction) of the products in stream 3 when methane feed is 16.0 g/hr and air feed is 300 g/hr. XP9. Ethylene (C2H4) is fed to a reactor at 5000 lb/hr. In the reactor, the ethylene is mixed with HCl to yield ethyl chloride (C2H5Cl). What are the flow rates (lb-mol/hr) of the HCl feed and ethyl chloride product? XP10. As a substitute non-chlorinated solvent for dry cleaning fabrics, bromopropane (C3H7Br) demand has increased. Bromopropane can be synthesized by reacting propanol (C3H8O) with hydrogen bromide (HBr), with water as the second product. A reactor is fed 20 kg/min propanol and 20 kg/min hydrogen bromide. Use the extent of reaction method to carry out the mass balance. a) If one of the reactants is completely consumed, what is the composition of the reactor outlet stream? b) What is the fractional conversion of the excess reactant? c) What is the extent of reaction? d) If 80% of the limiting reactant is consumed, what is the yield of bromopropane?