CO_(2) and H_(2)Oboth are triatomic molecules but their dipole moment values are different.Why?

CO_(2) and H_(2)Oboth are triatomic molecules but their dipole moment

1.	CO_(2) and H_(2)Oboth are triatomic molecules but their dipole moment values are different.Why?
Answer» Solution :In `CO_(2)` there are two C-0 bonds. Each C=O bond is a POLAR bond. The net dipole moment of `CO_(2)` molecule is zero. This is possible only if `C_(2)` is a linear molecule.(O = C = O). The bond dipóles of two C = 0 bonds CANCELS the dipole moment of each other. Whereas, `H_(2)O` molecule has a net dipole moment (1.84 D). `H_(2)O` molecule has a bent structure because here the O - H bonds are ORIENTED at an angle of `104.5^(@)` and do not cancel the bond dipole moments OS each other.