ln(P2/p1) = H/R(1/T1-1/T2)
ln(1.733/101.3) = H/R(1/468-1/368)
-4.068
= H/R(0.00213-0.00271)
-4.068
= H/R(-0.00058)
H/R
= 7013.79
ln(P/101.3) = 7013.79(1/468 - 1/293)
= 7013.79(0.00213 -0.00341)
= 7013.79*-0.00128
= -8.977
p/101.3 = 10-3.89
P = 1.29*10-4 *101.3
= 0.013 torr
PV = nRT
n/V = P/RT
P = 0.013/760 = 1.71*10-5 atm
n/V = 1.71*10-5 /0.0821*293
= 7.1*10-7 mole/L
= 7.1*10-7 *1000L/m3 *135 = 0.0958 g/m3
The boiling point of amphetamine, C_9H_13N, is 195 degree C at 101.3 kPa and 95 degree...
5
The boiling point of chloroform CHCl_3 is 61.70 degree C at 1 atmosphere A nonvolatile. nonelectrolyte that dissolves in chloroform is cholesterol If 11.59 grams of cholesterol C_27H_46O (336.6 g/mol) are dissolved in 232.3 grams of chloroform. The molality of the solution is m. The boiling point of the solution is degree C.
At its normal boiling point of 126 degree C, octane, C H has a vapor pressure of 760 mm Hg. What is its vapor pressure at 25 degree C? The enthalpy of vaporization of 39.07 kJ/mol point (in degree C) of a solution prepared by dissolving 7.40 g Assume ideal behavior. K_fp for H_2 O is -1.86 degree C/m.
Problem 2 A flow of air (600 m3/h) enters an automotive A/C unit at 101.3 kPa, 40°C, and 20% relative humidity is cooled to 12°C. (a) Draw a schematic of the system Determine: (b) the mass flow rate of dry air for at the inlet (c) the rate of heat removed in (kW) (d) the rate of liquid water condensation (if any, in kg/hr)
3. An isentropic air compressor operates between pi= 101.3 kPa, T= 80°C, pe= 0.4 MPa. Find the exit temperature of the air and the work input in kJ/kg.
14. An automobile tire is inflated to a gauge pressure of 207 kPa (30 lb/in.2) at a time when the surrounding pressure is 1 atm (101.3 kPa) and the temperature is 25°C After the car is driven, the temperature of the air in the tire increases to 40°C. Assuming the volume changes only slightly, what will be the new gauge pressure in the tire? d) An oxygen tank with an internal volume of 20 liters is filled with oxygen under...
6. Atmospheric air at 101.3 kPa, 27°C, and 50% rela- tive humidity is heated at constant pressure to 43 C. What heat transfer is required? (A) 17 kJ/kg (B) 21 kJ/kg (C) 39 k.J/kg (D) 61 kJ/kg
Which one of the following reactions, when carried out at 25 °C and 101.3 kPa pressure, has an enthalpy change corresponding to the standard molar enthalpy of formation, ∆Hf°, of C2H5OH (l) ? A. C2H5OH (l) → 2 C (g) + 6 H (g) + O (g) B. C2H6 (g) + 1/2 O2 (g) → C2H5OH (l) C. 4 C (s) + 6 H2 (g) + O2 (g) → C2H5OH (l) D. C2H5OH (l) + 3 O2 (g) → 2 CO2...
If air in a sealed flask at 20 degree C has a pressure of 105 kPa. What is the value of k using the law of Gay-Lussac? Use the value of k from question 1 to calculate the pressure of the air in the flask at 40 degree C.
An air conditioning system operates at a total pressure of 95 kPa and consists of a heating section and a humidifier that supplies wet steam (saturated water vapor) at 100°C. Air enters the heating section at 10°C and 70 percent relative humidity at a rate of 35 m/min, and it leaves the humidifying section at 20°C and 60 percent relative humidity. Determine (a) the temperature and relative humidity of air when it leaves the heating section, (b) the rate of...
The following information is given for water at latm: boiling point = 100.0 degree C Delta H_vap(100.0 degree C) = 2.259xl03 J/g melting point = 0.000 degree C Delta H_fus(O.OOO degree C) = 333.5 J/g Specific heat solid = 2.100 J/g degree C specific heat liquid = 4.184 J/g degree C A 27.00 g sample of solid water is initially at -28.00 degree C. If 1.007xl04 J of heat are added to the sample at constant pressure (P = 1...