Bond energy length

Post on 23-Jun-2015

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An introduction to the concepts of bond energy and length, focusing on the energy changes of two bonding hydrogen atoms at various distances apart.

Transcript of Bond energy length

Molecular structure

Bond Energy and Length

Che

mic

al p

oten

tial e

nerg

y

Distance between nuclei

H H

Che

mic

al p

oten

tial e

nerg

y

Distance between nuclei

H HH HH H

+-

+-

bond length

bond length

bond length

bond length bond length

bond energy

Chemical Potential Energy

Chemical Potential Energy

work

ability to do

Chemical Potential Energy

work

ability to do

done when

Chemical Potential Energy

work

ability to do

done when

force

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

e.g.electrostatic

force

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

e.g.electrostatic

forcemay be

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

e.g.electrostatic

forcemay be

attraction

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

e.g.electrostatic

forcemay be

attraction repulsion

Chemical Potential Energy

work

ability to do

done when

forceacts through a

distance

e.g.electrostatic

forcemay be

attraction repulsion

+-

+-

+-

+

-

attractionattraction

+-

+-repulsion

+-

+-repulsion

repulsion

+-

+-repulsion

repulsion

+-

+

-

repulsionrepulsionattractionattraction

+-

+

-

attractionattraction

repulsionrepulsion

+-

+

-

Net attraction

+-

+-

+-

+-repulsion

+-

+-attraction

+-

+-

Net repulsion

+-

+

-+ +

-

-