The vapor pressure of ice at 268 K is 3.90 x 10-3 atm
and at 273 K, the vapor pressure of ice is 6.00 x 10-3
atm. Calculate the heat of sublimation, ΔHsub of ice in
kilojoules per mole.
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9. At 304 K the vapor pressure of pure ethyl acetate (CH,COOC2Hs) is 0.173 atm and the vapor pressure of pure methyl acetate (CH,CoOCH,) is 0.402 atm. Mixing 46.8 g of ethyl acetate M 68.11g/mo) with 45.8 g of methyl acetate (MM-74.08g/mol) gives a solution that is nearly ideal. (must show work to receive credit) (a) Calculate the mole fraction of ethyl acetate in the solution. XEl-acetate in solution (b) Calculate the total vapor pressure of the solution at 304...
At 330 K the vapor pressure of pure n-pentane is 1.92 atm and the vapor pressure of pure n-octane is 0.07 atm. If 330K is the normal boiling point for a solution of these two substances, what will the mole fractions of each substance be in that solution? [If you can't figure out how to do this mathematically, you can estimate from the plot..... for reduced credit.] Octane+Pentane Pvaps at 330K po Pentane P (atm) Ptot Pv Pent Pv Oct...
P5.26 A 22.0 g mass of ice at 273 K is added to 136 g of H20() at 310. K at constant pressure. Is the final state of the system ice or liquid water? Calculate AS for the process. Is the process spontaneous?
P5.26 A 22.0 g mass of ice at 273 K is added to 136 g of H20() at 310. K at constant pressure. Is the final state of the system ice or liquid water? Calculate AS for...
Calculate the entropy change when 72.00 g of ice, at 273.2 K and 1.000 bar pressure, is melted and then heated to 298.2 K. The enthalpy of fusion of ice is 6.009 kJ/mole and the heat molar heat capacity of water at 1.000 atm is 75.43 J/ K mole Please help! Can't figure this homework problem out.
10. The initial volume of a gas is 10.1 liters at 10.0 atm and 273 K. Calculate the pressure in atm of the gas if the volume is changed to 0.500 liters while the temperature remains constant. A gas occupies a volume of 87.0 mL at 315K and 1 atm. What volume in milliliters will the gas have at 475K and 1 atm? 11. 8
AJ mol Calculate The vapor pressure of water is 1.0 atm at 373 K, and the enthalpy of vaporization is 40 the vapor pressure at 400 K
DATA Temperature (°C) Temperature (K) /T (K) Vapor Pressure (mm Hg) In (Vapor Pressure) 299.0K 302.2 K 30% 30q.2K 0.003344 D.003210 o -1 -l -I 149.U |い·3· 1912 0T.2 1. Plot In(Vapor Pressure) vs. 1/T using a spreadsheet program like Excel. Include the correlation coefficient and the lincar regression equation for the best-fit straight line through the points.dsa Attach the graph to this report. I Iniar regresstoneqvation035 Calculate the heat of vaporization for ethanol based on the slope obtained from...
The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure 0.0807 atm 0.0952 atm 0.111 atm 37. °c 46. °C Use this information to calculate the enthalpy of vaporization of X Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol. D-미금
The vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure 0.0409 atm 0.0861 atm 0.170 atnm 24. °C 38. °C Use this information to calculate the enthalpy of vaporization of X. Round your answer to 2 significant digits. Be sure your answer contains a correcu unit symbol 0 Explanation Check
1 atm is the vapor pressure of X at the normal boiling point by
definition, it has no measurement uncertainty.
The ent al y of vapor zation of Substance Xis 25.0 mol and its normal boiling point is 125 Calculate the vapor pressure of at 19 C Round your answer to 2 significant digits