Because (OH/OP)T = CpJ-T, the change in enthalpy of a gas expanded at constant temperature can be calculated. To do so, the functional dependence of μJ-T on P must be known. ▼ ▼ Part A Treating Ar as a van der Waals gas, calculate AH when 1 mole of Ar is expanded from 324 bar to 1.69 bar at 375 K. Assume that μJ-T is independent of pressure and is given by J-T= [(2a/RT) - b)/Cpm, and CPm= 5R/2 for Ar. Express your answer with the appropriate units. ΔΗ = Submit Part B μA Value Request Answer Units ? What value would AH have if the gas exhibited ideal gas behavior?

Because (OH/OP)T = CpJ-T, the change in enthalpy of a gas expanded at constant temperature can be calculated. To do so, the functional dependence of μJ-T on P must be known. ▼ ▼ Part A Treating Ar as a van der Waals gas, calculate AH when 1 mole of Ar is expanded from 324 bar to 1.69 bar at 375 K. Assume that μJ-T is independent of pressure and is given by J-T= [(2a/RT) - b)/Cpm, and CPm= 5R/2 for Ar. Express your answer with the appropriate units. ΔΗ = Submit Part B μA Value Request Answer Units ? What value would AH have if the gas exhibited ideal gas behavior?

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...

See similar textbooks

Similar questions

A fuel has the following volumetric analysis: CH4 = 68% C2H6 = 32% Assume complete combustion with 15% excess aur at 101.325 kPa and 27 degrees dry bulb temperature. What is the total moles in the products of combustion?
Ratio of specific heats of CO2 at 825K?
L-Serine is an amino acid important for its roles in synthesizing other amino acids and for its use in intravenous feeding solutions. It is often synthesized commercially by fermentation, and recovered by subjecting the fermentation broth to several processing steps and then crystallizing the serine from an aqueous solution. The solubilities of L-serine (L-Ser) in water have been measured at several temperatures, producing the following data:5T(K) 283.4 285.9 289.3 299.1 316.0 317.8 322.9 327.1x(mole fraction L-Ser) 0.0400 0.0426 0.0523 0.0702 0.1091 0.1144 0.1181 0.1248One of the ways such data can be represented is with the van’t Hoff equation: ln x =( a=T b).Graph the data so that the resulting plot is linear. Estimate a and b and give their units.
1. A perfect gas undergoes compression at constant temperature, which reduces its volumeby 3.08 dm3. The final pressure and volume of the gas are 6.42 bar and 5.38 dm3, respectively. Calculate the original pressure of the gas in (a) bar, (b) atm. 2. Consider an isothermal column of an ideal gas at 25oC. What must be the molar mass ofthis gas be if the pressure is 0.80 of its ground level value at (a) 10km and (b) 1km ? Please show complete solutions
3. Calculate the difference between ΔH and ΔU when 1.0 mol of Sn(s, grey) of density 5.75 g cm-3 changes to Sn(s, white) of density 7.31 g cm-3 at 10.0 bar.
A quantity of 1.00 x 102 mL of 0.500 M HCl was mixed with 1.00 x 102 mL of 0.500 M NaOHin a constant pressure calorimeter of negligible heat capacity. The initial temperature of the HCLand NaOH solutions was same, 22.50 0C, and the final temperature of the mixed solution was25.86 0C. Calculate the (a) heat of the reaction at constant pressure (qp) and (b) the change inenthalpy for the neutralization reaction (ΔHrxn) in kJ per mole of HCl. Assume that the densitiesand specific heat of the solutions are the same as for water (1.00 g/mL and4.184 J/g.0C, respectively).NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Determination of enthalpy of neutalisation Ccal=20 J/°C Volume of HCl = 150 ml Initial temperature of HCl = 30 °C Volume of NaOH = 149 ml Initial temperature of NaOH = 30 ° C Final Solution Temperature = 45 °C Moles of H+ = .220 mol Moles of OH- = .221 mol Limitng reagent = OH- Heat transfer of solution = ___________|Kj Enthalpy of neutralisation per mole of limiting reagent = _____________________|kj/ mol
A student was asked to determine the enthalpy of solution of KclO3 in water using Styrofoam calorimetry. Calibration was performed by mixing 8.00 mL 0.050 M HCI with 2.00 mL 0.200 M NaOH. The neutralization reaction (AH = -55.85 kJ/mol) was accompanied by a temperature change from 25.0 to 28.3°C. Using the same calorimeter, 0.300 g KCIO3 (MW: 122.55) was dissolved in water and the temperature was observed to change from 23.6 to 17.3°C. (Assume that the total volume of the mixture in calibration is the same in the enthalpy measurement) What is the calorimeter constant in kJ/°C? What is the enthalpy of dissolution of KCIO3 in kJ/mol?
Predict the output of energy as heat from the combustion of 1.0 dm3 of octane at 298 K and 1 bar. Its mass density is 0.703 g cm−3 ?
Express [O3] = 2.0 x 1012 molecules cm-3 as a volume mixing ratio (ppbv) at 25 ºC, 1 atm.
a) What is the standard enthalpy of reaction per mole of either HCl or NaOH when 50.00 cm3 of 0.1 moldm-3 of hydrochloric acid (HCl) and 50.00 cm3 of 0.1 moldm-3 of sodium hydroxide (NaOH) are mixed? According to your simulation, the temperature rose by 0.68 oC. (Density of water = 1gcm-3, Specific heat capacity of water = 4.18 J g-1 oC-1) Show your working below:
The heat capacity ratio of an ideal gas is 1.38. What are its Cv and Cp values?