Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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A rotameter records 100 L/h of liquid mixture being pumped into a distillation column operating at steady-state. This feed mixture contains 30 wt% acetone (A) and 70 wt% H2O. During the processing, it is able to achieve a top product stream with 90 wt% A while the bottom product stream contained 5% of the A fed to the column and the rest H2O.
1. What is the ratio of top product to feed? The specific gravity of the feed is 0.75.
a. insufficient information to make a conclusion b. lesser than 1 c. greater than 1 d. 1
2. How many of DoF?
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- Two aqueous NaOH streams are combined. Stream A is 26% NaOH by mole. Stream B is 69% NaOH by mole. The product (combined) stream has a flow rate of 125 lbmole/h and is 57% NaOH by mole. Determine the flow rate of stream A and stream B (lbmole/h).arrow_forwardUse the chemical reaction below to answer the following questions HCI(aq) + NaOH(aq) → NaCl (aq) + H2O (I) AH298 = -58 kJ/mol (a) How much heat is produced when 200 mL of 0.3 M HCL (density = 1.00 g/mL) and 250 mL of 0.25 M NaOH (density = 1.00 g/mL) are mixed? (b) If both of the solutions at the same temperature and the heat capacity of the products are 5.39 J/g °C , how much will the temperature increase? (c) What assumptions are made when calculating your answersarrow_forwardDO NOT SOLVE PROBLEM. Please just calculate extent of reaction and flow rates of each component in the reaction.arrow_forward
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- A CHM student completing the calorimetry experiment mixes 20.0 mL of 1.10 M HCl (aq) with 20.0 mL of 1.05 M NaOH (aq), and observes the temperature increase of 6.611∘∘C. Assume that the density of each solution is 1.02 g/mL, and the specific heat for the resulting solution is 4.02 J/g∙℃. Calculate the change in enthalpy for this reaction (ΔHrxn) in kJ/mol H2O. Use the correct sign (+ or -) and significant figures.arrow_forwarda process consists of two distillation columns. the composition of the feed to the first column is 30 mol% benzene, 30 mol% toluene, and 40 mol% xylene. the top stream of the first column does not contain xylene. the benzene content of the dome stream from the first column is 55 mol %. the bottoms stream from the second column has a flow of 100 mol/h and contains 15 mol% toluene and no benzene; while the top stream of the second column contains 50 mol % benzene. the upper stream flow of the first tower is twice the upper stream flow of the second tower. determine the molar flux of the fresh feed stream and the overhead stream leaving the first column.arrow_forwardFresh methanol (CH3OH) reactant is combined with recycled reactant and vaporized before being sent to a fixed-bed reactor. The reactor effluent is then cooled before being sent to the first of two distillation columns. DME (CH3)2O product is taken overhead from the first column. The second column separates the water from the unused methanol. The methanol is recycled back to the front end of the process, and the water is sent to wastewater treatment to remove trace amounts of organic compounds. Draw a block flow diagram for this process. The main reaction is 2CH3OH → (CH3)2O + H2Oarrow_forward
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