Calculate the standard molar enthalpy, Physics

Assignment Help:

(a) Using the thermochemical tables provided, calculate the standard molar enthalpy of combustion at 298 K for the following hydrocarbon:  C C2H4 (g ) (ethene) 

(b)  If a combustion reaction were carried out in a bomb calorimeter using 55g of your compound, what would be the amount of heat released?       

(c)  Estimate the standard molar enthalpy of combustion of the compound used in part (a), at  a temperature of 376.9K, given the following molar heat capacities:                            

 

Cp,m/ J K-1 mol-1

 

A C3H8 (g)

73.5

B C4H10 (g )

97.5

C C2H4 (g )

43.6

D C3H6 (g )

63.9

EC4H8 (g )

85.7

O2 (g)

29.4

CO2 (g)

37.1

H2O (l)

75.3

What assumption has been made in your calculation?

(d)   From the mean bond enthalpy data given below, estimate the enthalpy change for the complete combustion of  one mole of  your compound at 298 K.  (The molar enthalpy of vaporization of water is 45.0 kJ mol-1 at 298K).

Bond

C-H

O=O

O-H

C=O

C-C

C=C

 Mean bond enthalpy/kJmol-1

414

499

460

799

347

612

 (e) Comment on your answers to parts (a) and (d). 


Related Discussions:- Calculate the standard molar enthalpy

What is the wavelength of wave that propagates down a string, The speed at ...

The speed at which a wave propagates down a string is 300 meters per second.  If the frequency of this wave is 150 Hertz, what is the wavelength of this wave? Ans: The wavel

Reflection?, I have a chandelier that hangs in front of my tv, when I look ...

I have a chandelier that hangs in front of my tv, when I look at the tv I can see the chandelier in the tv. What physics phenomenon is this? reflection?

Explain construction of michelsons interferometer, Q. Explain Construction ...

Q. Explain Construction of michelsons interferometer? It consists of two highly polished plane mirror M1 and M2, with two optically plane glass plate G 1 and G 2 which are of

Circuits involving capacitive decay, Circuits involving capacitive decay: ...

Circuits involving capacitive decay: Consider the circuit shown below. Depending on the time constant of the circuit, relative to the period of the square wave applied to it,

Explain the normal force - balanced forces, Explain the Friction Fricti...

Explain the Friction Friction is a force that works against all motion. It slows everything down and it is the reason that the motion we are most familiar with always seems to

Electric intensity due to charged conducting spherical shall, Write a short...

Write a short note on different kinds of capacitors. Applying Gauss's law derive the mathematical expression for electric intensity due to a charged conducting spherical shall

Electronics, characteristics of schottky diode

characteristics of schottky diode

Cadmium rods are provided in a nuclear reactor, Cadmium rods are provided i...

Cadmium rods are provided in a nuclear reactor. Why? Cadmium rods are given in nuclear reactors due to when we begin nuclear reactor then more energy is required for start the

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd