Calculate the phase diagram of the forsterite (Mg2SiO4) fayalite (Fe2SiO4) system, assuming solid solutionbetween the two phases, complete mixing in the liquid,and DHmelting = 14 kcal/mol for each phase. Therespective melting temperatures of the two phases are2163 K (forsterite) and 1478 K (fayalite). Sketch yourphase diagram.

Step 1:To calculate the phase diagram,we need to consider the gibbas phase rule,which…

Answered: Calculate the phase diagram of the…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 92QRT

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3. The phase diagram for the simple system aluminum copper is drawnbelow. Answer the following questions by referring to this diagram.A. How many phases will be present if an aluminum-copper mixture containing 80% copper is heated to 1000oC?B. If the system described in (A) is slowly cooled, at what temperature willa solid start to appear? What is this solid?C. What phases will be present if the mixture (A) is further cooled down to600oC?D. What is the concentration of the saturated solution of copper inaluminum at 800oC?E. For a mixture given in (A), at what temperature will the eutectic mixturecrystallize out?F. What is the percentage by weight of copper in the eutectic mixture formed in (E)?
Consider the phase diagram below for Na, K, and the compound Na2K. For each region 1-6 give the number and identity of the phases present. Then describe the sequence of phase changes that would occur cooling of a solution of composition A (indicated on the diagram) to –30°C. Graph attached
12 (a) (b) Describe how you can obtain the integrated form of the Clapeyron equation as below. State any assumptions you have to make. Afus H (T-T) P₂≈ P₁+ AfusV T₁ The heat of fusion (Afus H) of Hg at its normal melting point (-38.9 °C) is 2.82 cal.g¹. The densities of Hg(s) and Hg(1) at -38.9 °C and 1 atm are 14.193 and 13.690 g cm Estimate the melting point of Hg at 100 atm using the result in (a). respectively. Ans 234.8K or -38.4°C
Given the property on the left as the criterion, which of the following order of comparison is TRUE? Select one: a. Increasing electrical conductivity at 25 °C: Si < SiO2 < SiCl4 b. Increasing standard boiling point: 0.10 molal solution of sucrose in CH3CH2OH < pure CH3CH2OH < 0.10 molal aqueous solution of sucrose c. Increasing standard melting point: I2 < Br2 < Cl2 d. Increasing melting point: Na < NaCl < Na2O
Consider solutions of Cr(NO3)3-9H2O in water. The solubility of Cr(NO3)3.9H2O in water at 15 °C is 208 g of Cr(NO3)3-9H2O per 100 g of water. You take a metal spatula and scratch the side of the glass vessel that contains the cooled solution described in the previous question. As a result, crystals of Cr(NO3)3-9H2O appear. What mass of crystals do you expect to form? 208 g 303 g 95 g 511 g 403 g
a) Calculate the normality and formality of a potassium permanganate solution of which 35.00 mL are equivalent to 0.2500 g of 98% pure calcium oxalate. b. How many microliters of a commercial hydrogen peroxide solution (assume the solution is approximately 3.5% w / v) will react with 35.00 mL of a solution whose formality was obtained in the previous part?
A substance suggested as a possible solvent for use in molecular mass determinations by freezing point depression is 1,4 dioxane. When 1.050 g of benzamide was dissolved in 22.77 g of 1,4 dioxane the freezing point of the solution was 99.7 degrees Celsius. The freezing point of 1,4 dioxane is 11.82. Calculate the molal feeezijgbpoint depression constant for 1,4 dioxane.
Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2
Calculate the volume of concentrated ~ 0.1250 M copper (II) acetate monohydrate solution needed to prepare 25.00 mL of ~0.0500 M copper (II) acetate monohydrate from your stock solution.
The vapor pressure of water at 30 °C is 4.24 kPa. Calculate the vapor pressure if 65.0 g of glycerol, C.H.O.(1), is added to 100.0 mL of water. The density of water at 30 °C is 0.996 g.mL-¹.
Give the approximate value in K of the normal melting point of the pure substance described by the phase diagram below. A ±25 K tolerance is allowed. #1 #2 1 A 0.5 200 250 300 350 400 450 Temperature in K Pressure in atm
ST4D.3 - The vapor pressure of a substance at various mole fractions in a mixture were found to be as follows. Estimate the Henry's law constant [in MPa] for the substance for the particular solvent of this mixture. USE ALGEBRA instead of a graphical approach. Don't forget there's one more data point that isn't listed in the table (the origin). 0.00230.01020.0182 99.7 48.8 |P/КРа 27.7 Type your answer...

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