Question

If the reference state of n-hexane is set as liquid at 25 °C and 1 bar,...

If the reference state of n-hexane is set as liquid at 25 °C and 1 bar, what is the enthalpy of the n-hexane at the exit condition in problem 3? What is the enthalpy of n-hexane as a vapor at 85 °C?

For n-hexane as a liquid: Cp(J/mol K) =–75.225 + 1.176 T–1.344 x 10-3 T^2

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A mixture of n-heptane and n-hexane containing 25 mol% n-hexane is vaporized at a pressure of...
A mixture of n-heptane and n-hexane containing 25 mol% n-hexane is vaporized at a pressure of 100kPa. Determine the following a)The bubble point temperature b)The composition of the vapor The vapor pressures are given by the Antoine equation: lnP*= A-(B/T-C) Where P is in kPa and T is in K. The Antoine constants are given as follows: n-heptane: A=13.8587,B=2911.32,C=56.51 n-hexane: A=13.8216,B=2697.55,C=48.78
The following data are available for liquid ethanol at 20 C: M.W. = 46.07, Density =...
The following data are available for liquid ethanol at 20 C: M.W. = 46.07, Density = 0.7893 g/cc, Coefficient of thermal expansion = 1.12x10^-3 K^-1, Isothermal compressibility = 1.0x10^-4 bar^-1 (a) Estimate the difference (Cp-Cv) for liquid ethanol at 20 C in J/mol K (b) 10 liters of liquid ethanol at 20 C is compressed isothermally from initial pressure of 1 bar to a final pressure of 50 bar. For this process, calculate the enthalpy and entropy change of the...
Calculate deltaS for N2 (1 bar, 298 K) --> N2 (32 bar, 1500 K). Assume N2...
Calculate deltaS for N2 (1 bar, 298 K) --> N2 (32 bar, 1500 K). Assume N2 to be an ideal gas. CP = 28.58 + 3.77 x 10-3 T – 0.50 x 105 T-2 J K-1 mol-1
the liquid-solid-vapor triple point of a pure component is T triple = 10 C and P...
the liquid-solid-vapor triple point of a pure component is T triple = 10 C and P triple = 0.05 bar. The molar densities of the liquid and solid phases are pl = 22 kmol/m^3 and ps = 26 kmol/m^3, respectively. The enthalpy change of sublimation of the solid at the triple point is Hsv = 6.22 kJ/mol and the enthalpy change of vaporization of the liquid at the triple point is Hlv = 5.65 kJ/mol. You are asked to calculate...
1. Find values of residual enthalpy for ethylene at 400 K and 25 bar using Peng-Robinson...
1. Find values of residual enthalpy for ethylene at 400 K and 25 bar using Peng-Robinson equation of state. 2. Find values of residual Gibbs energy, enthalpy and entropy for n-heptane at 500 K and 100 bar using Virial equation of state. 3. Estimate the values of Compressibility factor, enthalpy and entropy for Benzene and cyclohexane if it compressed from 650 K and 60 bar to 500 K and 110 bar. 4. Calculate ΔU and ΔH for 1 kg of...
Steam enters a control volume operating at steady state at 3 bar and 160 ◦ C...
Steam enters a control volume operating at steady state at 3 bar and 160 ◦ C with a volumetric flow rate of 0.5 m3 /s. Saturated liquid leaves the control volume through exit #1 with a mass flow rate of 0.1 kg/s, and saturated vapor leaves through exit #2 at 1 bar with a velocity of 5 m/s. Determine the area of exit #2, in m2 .
Given the temperature-dependent (molar) heat capacity of graphite: Cp,n= 16.86( J K^-1 mol^-1) +4.77*10^-3 JK^-2mol^-1)T-8.54*10^5(JKmol^-1)T^-2 calculate...
Given the temperature-dependent (molar) heat capacity of graphite: Cp,n= 16.86( J K^-1 mol^-1) +4.77*10^-3 JK^-2mol^-1)T-8.54*10^5(JKmol^-1)T^-2 calculate the change in the molar enthalpy of graphite in going from T = 298 K to T = 348K.
7.1 Assume that the density of solid water is 920 kg m-3 and that of liquid...
7.1 Assume that the density of solid water is 920 kg m-3 and that of liquid water is 1000 kg m-3. Calculate the change of the melting temperature, T, of ice for the process of changing pressure from 100 kPa to 1850 kPa. Use fusH = 6010 J mol-1 for water. 7.2 At two temperatures, 85 K and 135 K, the vapor pressures of a certain liquid were found to be 540 Torr and 830 Torr, respectively. From this information,...
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data...
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown in this table. T(K)      P(kPa) 275        3.64 575         5.28 If you were going to graphically determine the enthalpy of vaporizaton, ?Hvap, for this liquid, what points would you plot?                                                                                                                                  x                  y point 1  x axis in 3 significant figures and y axis in 4 significant figures  _____       _______ pont 2 x axis in 3 significant figures and y axis in 4 significant figures    _____       _______ Determine the rise, run, and slope...
1 kg of water in a piston cylinder arrangement is initially in a saturated liquid state...
1 kg of water in a piston cylinder arrangement is initially in a saturated liquid state at 1 bar. It undergoes expansion at constant pressure due to external heat supply to it, to a final state of saturated vapor. (i) What is the initial temperature of water in C? (a) 93.50 (b) 96.71 (c) 99.63 (d) 111.4 (e) 12.2 (ii) What is the change in enthalpy of water (kJ/kg-K)? (a) 417.46 (b) 2258.0 (c) 2675.5 (d) 2506.1 (iii) What is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT