Exercise 4.3

Using the dipole model of (H2O)2 on the previous page:

(i) For what orientation of the dipoles will the energy be most favourable (stable) ?

(ii) Using your answer to (i), determine the values of the angles qA , qB.

(iii) From your answers to (i) and (ii), sketch the shape predicted by the dipole model for the structure of (H2O)2 ?

(iv) Using your answers to (ii), calculate the interaction energy, E. Does the dipole model make good predictions of the geometry and energy of the hydrogen bond in (H2O)2 ?

(4peo = 1.112 x 10-10 J-1 C2 m-1)

Notes:

Write your answers in your notebook.

If you need help you can page back through the notes.

When you have finished this exercise, go to the next page.


[ Next Page ] [ Home ] [ Previous Page ]