ه B. Consider the phase diagram for an unknown substance provided in the questions below. بلا E What is the name of the transition that takes place from point C to point G? T G. A) vaporization B) condensation C) fusion D) melting
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- give 5 examples of a 1 phase diagram and show its phase ruleMelting point (Tm): -94.9C Boiling point (Tb): 110.7C a.) Using the data, find the vapor pressure of toluene at 20C in units of mol/L b.) What is the enthalpy of vaporization (∆?vap ) for toluene in kJ/mol?The enthalpy of fusion of mercury is 2.292 kJ/mol, and its normal freezing point is 234.3K with a change in molar volume of 0.517 cm3/mol on melting. At what temperature will the bottom of a column of mercury (density 13.6 g/cm3) of height 10.0m be expected to freeze?
- is the phase diagram of sulphur. At 95.4˚C, the densities of rhombic andmonoclinic sulphur are 2.07 g cm-3and 1.96 g cm-3, whilst the enthalpy change for thephase transition from rhombic to monoclinic sulphur is 0.3 kJ mol-1. i) How many triple points are there?ii) What is the most stable form of sulphur under normal conditions?iii) Describe what happens when sulphur at 1 atm is heated from 80˚C to 200˚C.iv) Determine the volume change ΔV for the transformation from rhombic tomonoclinic sulphur.v) Estimate the pressure at which rhombic and monoclinic sulphur coexist inequilibrium at a temperature of 373 K.Refer to Fig. 4A.9. Which phase or phases would you expect to be present for a sample of H2O at: (i) 100 K and 1 atm; (ii) 300 K and 10 atm; (iii) 273.16 K and 611 Pa?Refer to Fig. 4A.8. Which phase or phases would you expect to be present for a sample of CO2 at: (i) 200 K and 2.5 atm; (ii) 300 K and 4 atm; (iii) 310 K and 50 atm?
- The latent heat of fusion of water at 0Cis 6.025 kJ/mol and the molar heat capacities (Cp,m) of water and ice are 75.3 and 37.7 J K-1 mol-1, respectively. The Cp values can be taken to be independent of temperature. Calculate H for the freezing of 1 mol of supercooled water at -10.0C.For SO2 melting and boiling points are 198 K and 263 K respectively. Cp values for solid phase are 1.255 J/mol-K at 15 K and 84.185 J/mol-K for greater than 15 K. Cp values for liquid phase is 24.937 J/mol-K. For gas phase Cp = 49.769 + 4.56*10 TJ/mol-k where T is in K. Enthalpy of freezing and condensation processes are -7.402 kJ/mol and-24.937 kJ/mol respectively. Determine specific entropy of SO2 at 400 K. Image of question attached.Answers must be typed out, using units, in the simplest logical manner EXPLANATION CANNOT BE HAND-DRAWN Phase Diagram for CO2The phase diagram for CO2 is shown in Figure 17-38 . (a) What is the phase of CO2 at T=20°C and P=500 kPa? (b) What is the phase of CO2 at T=−80°C and P=120 kPa? (c) For reasons of economy and convenience, bulk CO2 is often transported in liquid form in pressurized tanks. Using the phase diagram, determine the minimum pressure required to keep CO2 in the liquid phase at 20 °C.
- What named equation(s) define the lines in single-component phase diagrams?What is the change in the boiling point of water at 1000 C per Pa change under atmospheric pressure conditions? The molar enthalpy of vaporization is 40.69 kJ mol-1, the molar volume of liquid water is 0.019 x 10-3 m3 mol-1, and the molar volume of steam is 30.199 x 10-3m3 mol-1, all at 100.000 C and 1.01325 bar. (Hint: change in temperature per change in pressure, dT/dP).The vapor pressure, ?,P, of a certain liquid was measured at two temperatures, ?.T. The data is shown in the table. T (K) P (kPa) 325 3.53 775 6.53 Keep the pressure units in kilopascals. If you were going to graphically determine the enthalpy of vaporizaton, Δ?vap,ΔHvap, for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the ?x‑values and four significant figures in the ?y‑values. point 1: ?=x= point 1: ?=y= point 2: ?=x= point 2: ?=y= Determine the rise, run, and slope of the line formed by these points. rise=rise= run=run= slope=slope= What is the enthalpy of vaporization of this liquid?