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

Pascals law, in hydraulic jacks,a car is placed at one end and force is ap...

in hydraulic jacks,a car is placed at one end and force is applied on the other piston to lift it . if the areas of the pistons are A1 and A2 such that A2>A1,in which end should t

Electromagnetism, #quest. While music is on you will try to oppose the two ...

#quest. While music is on you will try to oppose the two ear phone pieces to attract.

the power consumed, An electric bulb is rated 220 V and 100 W.When it is o...

An electric bulb is rated 220 V and 100 W.When it is operated on 110 V, the power consumed will be. Ans) P=V*I I will be same in both cases so P1=V1*I P2=V2*I Dividing both equati

Detectors and dielctrics, 1. What is the principle of gas filled detectors?...

1. What is the principle of gas filled detectors? 2. What are nuclear radiations or particle detectors?

Relativity, at what velocity a clock should move so that it seems slow by o...

at what velocity a clock should move so that it seems slow by one minute in a day?

Magnetism - basic concepts, Magnetism - Basic concepts: 1. Pole st...

Magnetism - Basic concepts: 1. Pole strength: The ability of a pole  of  a magnet to attract or repel another magnetic pole is called its pole strength. Units : A-m 2.

Thermometer, Construction of a thermometer

Construction of a thermometer

State avogadro''s law, "It is explaining that at similar temperature and pr...

"It is explaining that at similar temperature and pressure equivalent volumes of all gases contain similar number of molecules".

Explain scanning process of scanning electron microscope, Explain about the...

Explain about the scanning process and image formation of scanning electron microscope. Scanning process and image formation of scanning electron microscope In a typical sca

Magnetic field and electric current., the magnetic field at a dictance of 2...

the magnetic field at a dictance of 2cm from the axis of a straight conductor carrying current is 12mT.Find the currentin the conductor?

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