Potential Energy Color Contour Question

[bcjochim07]

[SOLVED] Potential Energy Color Contour Question

Homework Statement

This graph is potential energy contour for deuterated water, HDO. The label on the horizontal axis is the O-H bond length. What I'm wondering is: How can you tell from this graph that the break of the O-H bond is favored of the breaking of the O-D bond?

Homework Equations

The Attempt at a Solution

 

[bcjochim07]

never mind I figured it out