hi! how do you do the last part regarding slope and hvap? The enthalpy of vaporization (AHvap) is determined from the Clausius-Clapeyron equation:In VP = (-AHvap/R)(1/T) +C (Note: the form of this equation is linear: y = mx + b)Use a Google Sheets to calculate the values for the x and y axis from the data given below and toplot the natural log of vapor pressure (In VP) versus the inverse temperature in Kelvin (1/T).Trial # T(K)VP(mmHg)1298.2116.22301.1138.73305.1174.24308.4205.75310.8229.66313.3269.5Paste the data table into your spreadsheet so that Trial # is in cell A1.A new column is inserted on the spreadsheet between the T(K) and VP(mmHg) columns for the 1/Tcalculation.• What formula to calculate 1/T is typed into the cell directly to the right of 298.2 (cell C2)?=1/B2• How is the calculation completed for Trials 2-6? both of theseIn column E, calculate In VP.• What formula to calculate In VP is typed into the cell directly to the right of 116.2 (cell E2)?=In(D2)• How is the calculation completed for Trials 2-6? both of thesePlot column C vs column E.• After highlighting both columns, what is the next step?Both of theseThe chart type should be Scatter chart. Change if it is something different. In the Chart editor clickon Customize, choose Series. Check the boxes next to Trendline and R2. Under Label changeCustom to Use Equation.• What is the value of the slope? [ Select]• If the value of R is 8.3145 J/molK, what is the value of AHvap? [ Select]kJ/mol The chart type should be Scatter chart. Change if it is something different. In the Chart editor clickon Customize, choose Series. Check the boxes next to Trendline and R2. Under Label changeCustom to Use Equation.• What is the value of the slope v[ Select ]none of these• If the value of R is 8.3145 J/m-1x[ Select ]21.863kJ/mol5100.1The chart type should be Scatter chart. Change if it is something different. In the Chart editor clickon Customize, choose Series. Check the boxes next to Trendline and R2. Under Label changeCustom to Use Equation.• What is the value of the slope? [ Select ]• If the value of R is 8.3145 J/molK, what is the value of AHvap v[ Select ]5100.1kJ/mol42387-5100.1-42.442.4

Enthalpy of vaporisation, ∆Hvap is determined from the Clausius- Clapeyron equation ln VP = -∆HvapR…

The chart type should be Scatter chart. Change if it is something different. In the Chart editor click on Customize, choose Series. Check the boxes next to Trendline and R2. Under Label change Custom to Use Equation. • What is the value of the slope? [ Select] • If the value of R is 8.3145 J/molK, what is the value of AHvap? [ Select] kJ/mol >

The chart type should be Scatter chart. Change if it is something different. In the Chart editor click on Customize, choose Series. Check the boxes next to Trendline and R2. Under Label change Custom to Use Equation. • What is the value of the slope? [ Select] • If the value of R is 8.3145 J/molK, what is the value of AHvap? [ Select] kJ/mol >

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter9: Liquids And Solids

Section: Chapter Questions

Problem 10RQ

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Trichloroethane, C2H3Cl3, is the active ingredient in aerosols that claim to stain-proof men's ties. Trichloroethane has a vapor pressure of 100.0 mm Hg at 20.0C and boils at 74.1C. An uncovered cup (12pint) of trichloroethane (d=1.325g/mL) is kept in an 18-ft3 refrigerator at 39F. What percentage (by mass) of the trichloroethane is left as a liquid when equilibrium is established?
The following data are the equilibrium vapor pressure of limonene, C10H16, at various temperatures. (Limonene is used as a scent in commercial products.) (a) Plot these data as ln P versus 1/T so that you have a graph resembling the one in Figure 11.13. (b) At what temperature does the liquid have an equilibrium vapor pressure of 250 mm Hg? At what temperature is it 650 mm Hg? (c) What is the normal boiling point of limonene? (d) Calculate the molar enthalpy of vaporization for limonene using the Clausius-Clapeyron equation.
A 1.50-g sample of methanol (CH3OH) is placed in an evacuated 1.00-L container at 30 C. (a) Calculate the pressure in the container if all of the methanol is vaporized. (Assume the ideal gas law, PV = nRT.) (b) The vapor pressure of methanol at 30 C is 158 torr. What mass of methanol actually evaporates? Is liquid in equilibrium with vapor in the vessel?
What mass (g) of ethanol, CH3CH2OH(), can be vaporized at its boiling point of 78.4 C by transfer of 500. kJ to the liquid? The vapH of ethanol is 38.6 kJ/mol at this temperature.
Chloroform, CHCl3, a volatile liquid, was once used as an anesthetic but has been replaced by safer compounds. Chloroform boils at 61.7C and has a heat of vaporization of 31.4 kJ/mol. What is its vapor pressure at 37.2C?
What is the enthalpy change when a 1.00-kg block of dry ice, CO2(s), sublimes at 78 C? The enthalpy of sublimation of CO2(s) is 26.9 kJ/mol. Is this process exothermic or endothermic?
Follow the step-wise process outlined in Problem 31 to calculate the amount of heat involved in condensing 100.00 g of benzene gas (C6H6) at 80.00C to liquid benzene at 25.00C. Use Tables 8.1 and 8.2 for the specific heat, boiling point, and heat of vaporization of benzene.
p-Dichlorobenzene, C6H4Cl2, can be one of the ingredients in mothballs. Its vapor pressure at 20C is 0.40 mm Hg. (a) How many milligrams of C6H4Cl2 will sublime into an evacuated 750-mL flask at 20C? (b) If 5.0 mg of p-dichlorobenzene were put into an evacuated 750-mL flask, how many milligrams would remain in the solid phase? (c) What is the final pressure in an evacuated 500-mL flask at 20C that contains 2.00 mg of p-dichlorobenzene? Will there be any solid in the flask?
A 1.40-g sample of polyethylene, a common plastic, is dissolved in enough organic solvent to give 100.0 mL of solution. What is the average molar mass of the polymer if the measured osmotic pressure of the solution is 1.86 mm Hg at 25 C?
At a resort in Sante Fe, New Mexico, the barometric pressure is 625 mm Hg. Water boils in an open pot at 94.5C. A pressure cooker is set for 1.75 atm. (a) At what temperature will water boil in that pressure cooker? (For water, Hvap=40.7kJ/mol.) (b) What is the difference between the boiling point in the open pot and in the pressure cooker?
Dichloromethane, CH2Cl2,is widely used as a degreaser and paint stripper. Its vapor pressure is 381.0 mm Hg at 21.9C and 465.8 mm Hg at 26.90C. Estimate (a) its heat of vaporization (Hvap). (b) its normal boiling point.