A liquid mixture containing 40.0% benzene (B) and 60% toluene (T) by mass to the distillation column. The upper product stream contains 90 mol% B, and the lower product stream contains 6% of the benzene fed into the column (meaning that 94% of the benzene is left with the upper product). The volumetric flow rate of the feed is 2500 1/ hr and the specific gravity of .the feed mixture is 0.870 A- Rate of mass accumulation B- Component balance equation. The accumulation terms (d/ dt), can also be diminished to zero by assuming steady state

A liquid mixture containing 40.0% benzene (B) and 60% toluene (T) by mass to the distillation column. The upper product stream contains 90 mol% B, and the lower product stream contains 6% of the benzene fed into the column (meaning that 94% of the benzene is left with the upper product). The volumetric flow rate of the feed is 2500 1/ hr and the specific gravity of .the feed mixture is 0.870 A- Rate of mass accumulation B- Component balance equation. The accumulation terms (d/ dt), can also be diminished to zero by assuming steady state

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Ex7; An aqueous solution of sodium hydroxide contains 20.0% NaOH by mass. It is desired to produce an 8.0% NaOH solution by diluting a stream of the 20% solution with a stream of pure water. Calculate the ratios (liters H20/kg feed solution) and (kg product solution/kg feed solution). F =? kg = 0.2 XNaOH P =? kg XH,0 = 0.8 F2 =? kg F2 = 0.08 kg Na0H/kg xH,0 = 0.92 kg H20/kg %3D 1
A 100 g soil containing 20% smectitie mineral matter was mixed with 150 mL solution containing 0.10 M Pb. CEC of pure smectitie is 110 emol(+)/kg. CEC of the soil (cmol(+)/kg) is:
Mganga is doing a routine analysis in a copper plating factory. He is regularly making up solutions of verypure CuSO4.5H2O. He suspect that a batch of a reagent used to make up a stock solution of CuSO4.5H2Ois impure and it may contains some CuCl2. He asked you to determine the percentage impurity as follows:Dissolve1.500g of a mixture and make up to 1.00L mark.150mL of this solution was treated with 20.00mLof 0.100M AgNO3 to remove 98.6% of chloride as AgCl precipitate.
The aqueous solution of acetic with a flow rate of 1000 kg/hr contains 30% acetic acid by mass and will be extracted in a countercurrent multistage process with pure isopropyl ether (IPE) to reduce the acetic acid concentration in the final raffinate phase (LN) to 2% by mass. a) Calculate the minimum solvent flow. b) Determine the theoretical number of steps required when using a solvent of 1.5 minimum solvent flow rate. c) Determine the number of theoretical steps using the McCabe-Thiele method. Chart. Acetic acid (A)-Water (B)-isopropyl ether (IPE) (C) LIQUID-Liquid Balances at 1 atm pressure and 293 K Water layer (%) Water (B) Isopropyl ether layer (%) Water (B) 0.6 Acetic acid (A) IPE (C) Acetic acid (A) IPE (C) 98.8 1.2 99.4 99.3 98.9 0.69 98.1 1.2 0.18 0.5 1.41 97.1 1.5 0.37 0.7 2.89 95.5 1.6 0.79 98.4 91.7 1.9 1.0 97.1 6.42 13.30 25.50 36.70 1.9 93.3 4.82 11.40 2.3 84.4 71.1 3.4 3.9 84.7 71.5 21.60 31.10 58.9 4.4 6.9 58.1 48.7 10.6 10.8 45.1 37.1 44.30 46.40 16.5 36.20 15.1…
2. A solution composed of 50% ethanol (E1OH), 10% methanol (MeOH), and the rest are (H2O) is fed in weight at the rate of 100 kg/hr into a separator that produces one output stream at the rate of 60 kg/hr with the composition of 80% E1OH and 15% MeOH, and the second output stream of unknown composition. Calculate the composition (in wt. %) of the three compounds in the unknown stream and its flowrate in kg/hr. (Remember to show the variable analysis)
Problem 4. A field site in Pensacola, FL, is contaminated with creosote compounds (a wood preservative) in a nonaqueous phase liquid (NAPL) source. The mole fraction of phenol in the creosote is 3.2 x 104 mole phenol/mole creosote. Assume that the NAPL source material in extends vertically to the groundwater-unsaturated zone interface at the site. Estimate the partial pressure of phenol (atm) in the soil gas immediately above the NAPL, assuming the system is at equilibrium. Note: Phenol MW = 94 g/mol, vapor pressure = 0.00026 atm at 25°C.
Q1: What is the density (g/ml) of a 3.6M Sulfuric acid solution that is 29% H,So, by mass (Mwt. = 98)? Q2: Fill the blanks with suitable answers 1: The is the thing being dissolved. ......... 2: The branches of quantitative analysis are and 3. The filterability of the precipitate depend on the of practices. Q3: Which one is correct? 1. Molality changes with temperatures. 2. Molality does not change with temperatures. 3. Molarity changes with temperatures. 4. Normality changes with temperatures. Q4: What weight of pyrite ore (impure FeS,) must be taken for analysis so that the BaSO, precipitate weight obtained will be equal to one-half that of the percent S in the sample? Note: Mwt. of Ba =32, Mwt. of BaSo4 =233, Mwt. of FeS, =119
A 10 g sample of Mg504 · 7H/₂0 (246.48 2/mp) oven at 105 °C was heated in an until all the waters of hydration was evaporated off to generate MgSO4 (mhydrous). The sample was then dissolved in 250 mL of distilled water and diluted to a final volume of amount of 504²- in ppm in 0.56. The the final solution is ? motor masses in g/mol = My5o4 · 71/₂0 7/₂0 = 206 246.48, H/₂0 = 18.02 طلا
A mixture consisting of 15 mole % Phenol in water is to batch distilled at 260 torr, what fraction of the original batch is remains in the still when the total distillate contain 98mole % w water? What is the residues concentration?
A water containing 50 mg/L of phosphate (PO,") is flowing in an open channel at a volumetric flow rate (Q) of 2 MGD (million gallons per day). (a) What is the concentration of phosphate expressed in (i) mg/L as PO, --P, (ii) mM as PO., and (iii) mM as PO, P. (b) Find the mass flow rate (S) of phosphate through any section perpendicular to the direction of flow in the open channel expressed in lb/day? Given: Atomic weights: P= 31 g/mole, O = 16 g/mole, 1 gallon = 3.785 L, 1 kg = 2.204 Ib. %3D
Stripping Tower. A liquid mixture containing 10 mo! % n-heptane and 90 mol % n-octane is fed at its boiling point to the top of a stripping tower at 101.32 kPa abs. The bottoms are to contain 98 mol % n-octane. For every 3 mol of feed, 2 mol of vapor is withdrawn as product. Calculate the composition of the vapor and the number of theoretical plates required. The equilibrium data below are given as mole fraction n-heptane. y y 0.284 0.459 0.039 0.078 0.097 0.184 0.012 0.025 0.067 0.131 Also calculate the minimum reflux and min number of stages. Use(R=1.2,1.4, 1.5 ,2 * Rmin ) and find the number of stages .
Countercurrent Multistage Washing of Ore. A treated ore containing inert solid sulfate is to be leached in a countercurrent multistage gangue and copper extractor using pure water to leach the CuSO4. The solid charge rate per hour consists of 10000 kg of inert gangue (B), 1200 kg of CuSO, (solute A), and 400 kg of water (C). The exit wash solution is to contain 92 wt % water and 8 wt % CuSO4. A total of 95% of the CuSO, in the inlet ore is to be recovered. The underflow is constant at N Calculate the number of stages required. 0.5 kg inert gangue solid/kg aqueous solution.