Question 31 – For liquid benzene, the CP constants are : a = 129440, b = - 169.5, c = 0.64781. Reference temperature is 298 K. The temperature of benzene is 60 degree Celsius. Calculate the enthalpy of benzene by using the formula H = a (DT) + (b/2) (T^2 – TREF^2) + (c/3) (T^3 – TREF^3) where ^ is power, DT is temperature difference with TREF = 298 K. H is in J / kmol. DT = T – TREF.

Answer Posted / kang chuen tat (malaysia - pen

Answer 31 : T = 60 + 273 = 333 K. H = 129440 (35) + (-169.5 / 2) (333^2 - 298^2) + (0.64781 / 3) (333^3 - 298^3) = 4917920 J / kmol. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is higher heating value and lower heating value? Is it positive or negative?

2610


Explain how can one determine if a particular solid can be fluidized as in a fluidized bed?

656


What is vapour flooding and liquid floodin in distillation?

1279


Why is post-weld heat treatment (stress relieving) sometimes necessary for welded vessels?

665


What do you understand by wet bulb globe temperature?

808






What are some guidelines for sizing a psv for a fire scenario on a vessel in a refinery service?

906


Explain the reasons of removal of particles from effluent gas?

612


What is the import procurement cycle?

734


Explain what types of valves are recommended for slurry services?

646


Calculate the line size for a cooling water line with a volumetric flowrate of 1200m3/h of water. Density of water = 1000kg/m3

1618


Dielectric materials in static fields

1851


i m a frsh chemical engineer now i m confuse to attend the interview so anybody pls send model question papers to this christ_vivek33@yahoo.com

1819


how did you spend today

1749


Difference between Synthetic foaming agents V/S Protien based foaming agent?

2164


What is pneumatic conveying?

807