7. At an overall composition of 30 wt% tin at 200°C, use the lever rule to calculate the relativeweight fractions of liquid and solid in the 2-phase mixture. What are the compositions of thesolid and liquid phases at this temperature (in wt% Sn)? Temperature °CAtomic Percent Tin0 10 20 30 4035050327.502°C300250200150100506070L809090100231.9681°CPe(Pb)183°C18.361.997.8(ẞSn)001020 30Pb40 50 60 70 80Weight Percent Tin90195090100Sn

To solve this problem, we need to use the phase diagram and apply the lever rule at 200°C for an…

Answered: 7. At an overall composition of 30 wt%…

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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02:21 4G File Details 4CH003/UM1: Fundamentals of... Place a thermometer into the mixture and cool the flask in a water bath until the temperature is below 200C. Remove the flask from the water bath and carefully add cyclohexanol (10ml, 9.6g) to the acid mixture. Cyclohexanol is only slightly soluble in water so you should observe two immiscible layers at this point. Dissolve sodium dichromate dihydrate (10.5g) in water (5ml) in a 25ml conical flask and, using a dropping pipette, add this solution carefully drop by drop to the cyclohexanol/sulphuric acid mixture over about 30-40minutes. Swirl the flask vigorously during the addition process and maintain the temperature of the mixture in the round bottomed flask between 25-35°C during the addition by immersion of the flask in the cold water bath. If the dichromate solution is not added slowly, a rapid rise in temperature will occur and the reaction will become violent. 3 When all the dichromate solution has been carefully added rinse…
A chemist is asked to separate the components of a mixture composed of 1.00 g each of the two compounds shown below. The chemist has access to the following bases: 10% aqueous NaHCO3 and 10% aqueous NaOH. Which base and how many mLs of the base (i.e., the minimum amount) are needed to completely separate these compounds from each other by liquid-liquid extraction?
Make schematic sketches of the microstructures that would be observed for conditions of very slow cooling for a 50 wt% Pb -50 wt% Mg at (a) 500°C and (b) 300°C. Label all phases and indicate their approximate compositions. Composition (at% Pb) 10 20 30 40 70 100 700 L 1200 L 600 a +L Mg,Pb M H1000 500 at 800 400 L Mg2Pb 600 300 400 200 a + Mg,Pb 100 Mg,Pb 200 81% 16.920 34.7 40 60 61.5 80 100 (Mg) Composition (wt% Pb) (Pb) Temperature (°C) Temperature (F)
Find the concentration of the solution
a. Draw a rough sketch of a melting curve for the non-reacting eutectic mixture of Solids A and B.Given that the hypothetical melting point of pure solid A is 150°C and the hypothetical meltingpoint of solid B is 100°C. The eutectic point at temperature of 60°C corresponds to the 73mol%composition for B solid.b. Label the important regions corresponding to the:i. mol% axis for solids A and B.i. maximum melting temperatures for pure solid A and pure solid B.ill. the eutectic point.iv. molten (all liquid) regionv. all solid regionvi. region for solid A with meltvii. region for solid B with melt
01:50 4G File Details 4CH003/UM1: Fundamentals of... Introduction NaBH4 OH C=0 H benzophenone diphenylmethanol Ketones are readily reduced to secondary alcohols by reaction with sodium borohydride. The aim of this experiment is to determine the time required to effect the complete conversion of the ketone, benzophenone to diphenylmethanol at room temperature. This investigation may be achieved by isolating and analyzing the reaction product after different reduction times. Infrared spectroscopy affords a convenient method of analysis; by comparing the IR spectrum of the crude reaction product at different time intervals one would expect to see the intensity of the hydroxyl absorption peak increase relative to that of the original carbonyl peak. From this you can deduce the optimum time for the reduction process at room temperature. Procedure Note the "reduction time" that the demonstrator assigns to your group. Different groups will be assigned different times, eithert = 2.5 minutes,…
Calculate the solubility at 25 °C of PbCO3 in pure water and in a 0.0100M Pb(NO3), solution. You'll find Ksp data in the ALEKS Data tab. Round both of your answers to 2 significant digits. 0 // solubility in pure water: x10 solubility in 0.0100 M Pb(NO3)2 0-/- solution: L X 09 00 X S ?
A sodium hydroxide solution is to be standardized using KHP (99.5% purity, MW = 204.22). A 1.500-g KHP dissolved in water required 14.84 ml of NaOH solution for the phenolphthalein endpoint. Calculate the molarity of the NaOH solution.
d. Pressure, kPa 2. a. b. [PVTsim] This is a question regarding phase envelope and equilibrium concept. Using PVTsim with the PR EOS, show the following on the same P-T figure: PT cross section for the equimolar mixture of C₂ and nCs Vapor pressure curve of C2 Vapor pressure curve of nCs. Indicate the critical point of the equimolar mixture clearly. On the same figure, add another PT cross section for 10 mol% C₂ and 90 mol% nCs. Indicate clearly the critical point for this mixture. 7000 C2 -nC5 10 mol% C2 +90 mol% nC5 CP 10 mol% C2+ 90 mol% nC5 50 mol% C2 +50 mol% nC5 CP 50 mol% C2 + 50 mol% nC5 6000 5000 4000 3000 2000 1000 Critical point Critical point 0 250 300 350 400 450 500 Temperature, K C. Consider the mixing of two fluids and y, where =[0] and y=0.5] That is, represents 10 mol% C₂ and 90 mol% 10.9 nCs (part "b"), and represents the equimolar mixture (part "a"). Read the 2 (approximate) intersection of the dew-point curve for y and the bubble-point curve of x. It is…
An aqueous solution of propanone (acetone, 1) of total volume 0.120 mL was analysed by quantitative 1H NMR, using the CH protons of (E)-butenedioic acid (fumaric acid, 2) to provide an internal standard. A stock solution of 2 with concentration = 10.00 x 10-3 mol L-1 was prepared by dissolving pure solid 2 in deuterium oxide (D2O). The solution of 1 was mixed with a 0.400 mL aliquot of the stock solution of 2 and the 400 MHz 1H NMR spectrum of the mixture was recorded (see Table 2 below).

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