24. Water plays an important role in traditional ceramics shaping processes. With the help of a suitablediagram, discuss the effect of water volume on the aggregate volume of clay based ceramics. Hence discussthe drying stages for such materials using appropriate diagrams.Page 8 of 12[10 points]

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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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surface tension plays an important role in determining how well a paint will coat a solid surface. If you are trying to paint a pure iron surface, which of the following paints will be a good choice and why? oil based or water based What type of surfactant will you add to your water base or oil base paint? Why?(ainonic,cationic,nonininic,zwitterinonic
Sketch the phase diagram of the sys tem NH3/N2H4 given that the two substances do not form a compound with each other, that NH3 freezes at -78 °C and N2H4 freezes at +2 °C, and that a eutectic is formed when the mole fraction of N2H4 is 0.07 and that the eutectic melts at - 80 ° C.
Calculate the total pressure in a binary system where the mole fraction of A in the vaporphase is 0.200, the vapor pressure of pure A is 100. mmHg and the vapor pressure ofpure B is 300. mmHg.
1. How many phases are present at each of the points a-d indicated in the phase diagram (for a pure substance)? Evaluate the number of degrees of freedom based on Gibbs' phase rule for each point. Pressure C. a Temperature 2. Using the same phase diagram as in (1), trace the following processes using points to label initial and final states and a directed arrow to show the change: a. The substance starts in the single-phase region occupied by point a, is heated isobarically, passes through a triple point, and then ends as another single phase to the right of this triple point. b. The substance starts at the lowest single-phase region and is then compressed isothermally until it completely undergoes three phase transitions. The substance starts as a two-phase mixture along the line that contains d, expands isothermally until it becomes a single phase within the region of a, and then is heated at constant pressure until it becomes a two-phase mixture on the line between b and c.
The diagram shown below is a theoretical representation of the phase diagram for carbon. The hatched regions indicate conditions under which the phase is predicted to be metastable in effect this means that multiple phases can co-exist in these regions. Using this diagram, answer the following questions concerning the phases of carbon. Note the indicated scales for the horizontal and vertical axes (1 bar = 0.0001 GPa). 1000- 100- p/GPa 10- 0.1 0.01- 0.001+ 0 diamond graphite 1 2 3 4 liquid vapor 5 6 7 T/1000 K 8 9 10 (a) Does graphite melt or sublime at 10 bars of pressure? (b) If pressure remains constant, what are the possible phase transitions for diamond at 4500 K as T is increased? (c) Identify the approximate temperature and pressure of the standard solid-liquid-gas triple point on this diagram. Are there other triple points indicated in the diagram? (d) Estimate the maximum temperature at which graphite can exist at P = 1 GPa. What would happen if the pressure is increased for a…
Q. 6. Determine the composition of the center point of the "square" in the ternary phase diagram. SiO2 100 10 90 20 80 30 70 40 60 50 50 60 40 70 30 80 20 90 10 100 10 20 30 40 50 60 70 80 90 100 Na,0 B,03
A piece of metal weighing 0.713 g was placed in an eudiometer containing aqueous HCI. After the metal fully dissolved ,23.5 mL of hydrogen gas was collected by displacement of water and a 400 mm column of water was observed. The water temperature was 25 degrees Celcius and the barometric pressure was 758.8 mm Hg ( torr). Refer to the introduction and data sheet to solve the following problems.What is the vapor pressure of the water vapor in the column? What is the pressure of the water column expressed in mm Hg (torr) ? The density of mercury is 13.6 mL.
The vapor pressure, p, of nitric acid varies with temperature as follows: Ꝋ/oC 0 20 40 50 70 80 90 100 p/kPa 1.92 6.38 17.7 27.7 62.3 89.3 124.9 170.9 What are. The normal boiling point and The enthalpy of vaporization of nitric acid?
During the solution process, there are four different interacting forces involved: Hydrogen Bonding, Dipole-Dipole Forces, Van Der Waals forces, and London Dispersion Forces. Briefly explain each.
14.) Consider the phase diagram of Na and K where NazK formed at 0.66 mol Na and melts incongruently. Base on the image what phases are at equilibrium in region 5 of the phase diagram? A. Na (s) + peritectic B. Na (s) + eutectic C. Na (s) + NażK (s) D. K (s) + NazK (s) E. NazK + liquid . tti
3. True or False. a. The relation d In P / dT = AvapH / RT² should not be applied to solid-liquid transitions. b. The relation d In P / dT AvapH / RT² should be applied to liquid-vapor transitions. c. The relation d In P / dT - AvapH / RT² should be applied near the critical point. 4. Some vapor pressures of a certain substance are the following: Temp (°C) Р (Torr) 1227 1327 1427 1527 1627 19.72 48.48 107.2 217.7 408.2 Generate the equation of the best-fit line from a plot of ln P (Torr) vs. 1/T. b. Find the average AvapH over this temperature range. c. Estimate the liquid's normal boiling point. а. 5. The sublimation pressure of CO2 is 138.85 K and 158.75 K is 1.33x10-3 bar and 2.66x10-2 bar, respectively. Estimate the molar enthalpy of sublimation of CO2.
2. True or False. a. The relation dIn P/dT AH/RT2 should not be applied to solid-liquid transitions. b The relationdin P/DT AH/RT should not be applied to solid-vaportransitions. c The relation d In P/dT ApH/RT' should not be applied near the critical point 3. What is the effect of temperature on the vapor pressure of a liquid? 4. Some vapor pressures ofa certain substance are the following: Temp (°C) P(mmHg) 80.0 0.08880 100.0 0.2729 120.0 0.7457 140.0 1845 a. Generate the equation of the best-fit line from a plot of In P (mmnHg] vs. 1/T. b Find the average A, Hover this temperature range. c. Estimate the liquid's normal boiling point END Activity No. 3 Enthalpy of Vaparization of Water | 1

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