How Do You Calculate the Dipole Moment of CO2 with a 120 Degree Bond Angle?

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SUMMARY

The calculation of the dipole moment of carbon dioxide (CO2) with a 120-degree bond angle involves vector addition of bond dipoles. Given the bond length of 1.1867 Å for C-O, a charge of 1.1352 D for carbon, and a charge of -0.5676 D for oxygen, the dipole moment can be derived by constructing vectors based on these values. The standard bond angle in CO2 is 180 degrees; however, for this scenario, the angle is adjusted to 120 degrees, necessitating the use of vector addition techniques to accurately compute the resultant dipole moment.

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  • Understanding of vector addition in physics
  • Familiarity with dipole moments and their calculation
  • Knowledge of bond lengths and molecular geometry
  • Basic proficiency in using online resources for physics problems
NEXT STEPS
  • Learn how to construct dipole moment vectors in molecular geometry
  • Study the principles of vector addition in physics
  • Explore the impact of bond angles on molecular dipole moments
  • Review online resources for vector calculations, such as Glenbrook's physics site
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Students studying chemistry or physics, particularly those focusing on molecular geometry and dipole moments, as well as educators seeking to explain these concepts effectively.

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Homework Statement


r-bond length (in anströms)
q-charge (in debyes)
CO2 r(CO)=1.1867 q(C)=1.1352 q(O)=-0.5676
angle between them is 120 deg


Homework Equations





The Attempt at a Solution


I know I have to make vectors and then add them, but I don't know how to make the vectors. I know the angle in CO2 is 180, just need to find the dipole moment if the angle was 120.
 
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Try http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/vectors/u3l1b.html" site.
 
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