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Bond energy

Bond energy

The energy needed to break a molecular bond.


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Re: How do i know if a reaction is endothermic or exothermic?

Change in enthalpy = sum of bond energies of reactants - sum of energies of products = Total input energy – Total output energy From: Enthalpy Changes in Chemical Reactions http://faculty.ncc.edu/LinkClick.aspx?fileticket=L2sV5SDzIhE%3D&tabid=1871 ...

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by jonmoulton
Mon Nov 04, 2013 4:07 pm
 
Forum: General Discussion
Topic: How do i know if a reaction is endothermic or exothermic?
Replies: 1
Views: 3461

How do i know if a reaction is endothermic or exothermic?

Consider the Reaction: 2Hg) (s) --> 2Hg (l) + O2 (g) Bond: Hg=O 340kJ/mol O=O 498 kJ/mol How do i solve this? My answer was exothermic ... in Enthalpy: 498 - 680= -182 Therefore, the reaction is exothermic because energy is released from the bond. Can you please tell me what i did wrong and ...

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by VxW
Sun Nov 03, 2013 6:39 pm
 
Forum: General Discussion
Topic: How do i know if a reaction is endothermic or exothermic?
Replies: 1
Views: 3461

Anabolic reaction of polymers

For example if we give energy to some glucose it realeses starch .but we will do bond, but we use energy. dont we use enery to break up bonds? or we use this energy to break up the hdyrogen ...

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by Perotin
Tue Oct 15, 2013 10:08 am
 
Forum: General Discussion
Topic: Anabolic reaction of polymers
Replies: 1
Views: 896

Re: Why is ATP rather than GTP, CTP or TTP the energy currency?

The term`Energy Currency`is not accurate one . Because certain energy reactions ATP is NOT preferred ... for error free protein synthesis ( almost all of them CTP-GTP-TTP and ATP have same Bond energy . All nucleoside triphosphates have ΔG°' values close to -31 kJ/mol ) thermodynamically ...

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by metingun2
Sun Oct 06, 2013 11:53 am
 
Forum: Molecular Biology
Topic: Why is ATP rather than GTP, CTP or TTP the energy currency?
Replies: 5
Views: 5587

chemistry

... all you need is restricted rotation about some bond isomerization may occur at diverse conditions, e.g. organic solvent, high energy (light), radicals, enzymes

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by JackBean
Wed Mar 06, 2013 2:31 pm
 
Forum: Bioinformatics
Topic: chemistry
Replies: 1
Views: 2029
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