Use of Bond Energies to determine Enthalpy of Combustion. From 20to9.com

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Determination of the approximate enthalpy change of combustion of methane using average bond energy terms.
This method gives an estimate of the reaction's enthalpy change. For example, C-H bonds appear in many differnt compounds. The surrounding groups can influence the strength of bonds. Chemists have assigned an average bond energy to each bond to allow them to be used to estimate enthalpy changes for reactions.
To find a really exothermic reaction one wants a reaction where the reactants have relatively weak bonds and the products relatively strong bonds.

Category:

Howto & Style

Tags:

• Thermodynamics
• energetics
• enthalpy
• methane
• combustion
• specific
• heat
• capacity
• water
• moles

[amhajiTV]

Good looking out homie.

[Palmar3s]

how do I find the Bond length of Cl-O?

[aztrorisk]

I understand ty

[mhae2006]

thank you very much, this video really help me for the exam.

[surfinshredder]

The bond enthalpy of C=O is -799kJ :) not -743kJ. Otherwise it helped me a lot thank you. The explanation was very clear

[youarepwned]

@jesuslover037

I honestly don't know as I live in the US. :(

[pr0lyric]

Excellent vid just in time for my test in two days!!!

[jesuslover037]

@youarepwned Out of curiosity, do you know if teachers have tenure in Britain?

[youarepwned]

Thank you sir! This is proof that British folks make better teachers than American ones!

(No offense to my teacher though; he's pretty cool too)

[rharris2727]

the enthalpy of combustion is when 1 mole of a substance is completely burnt with oxygen under standard conditions, all reactants and products must be in their standerd states.

;) ive been revising thanks for the vid works well..