Environmental Chemistry Assignment | Professional Essay Writers

Using crystalline

Part 1:

i. Using the following average hond dissociation energies determine the total dissociation or mole of crystalline SiO solid.

ii.  Using the following average bond dissociation energies determine the total dissociatio mole of SiO (If it existed as individual SiO2 molecules.)

Bond                  average bond enthalpy (kJ/mol)

Si-                     O 466 4

Si                       642 X2 12 X 125-

iii. State which form of SiO, takes more energy to break down into its constituent atoms and therefore which is the thermodynamically more stable.

iv. Relate the answer you gave in (iii) to the structural form and physical state that SiO2 exhibits under normal conditions.

Part 2:

Write out the balanced chemical equations that occurred when the silicon dioxide and Mg were heated with the Bunsen burner. Give the oxidation numbers on all the atoms in each equation and therefore classify the type of inorganic reaction they both belong to.

Part 3;

i. Write out the balanced chemical equations that occur when the product mixture was added to acid.

ii. State whether silanes are more or less reactive than alkanes.