A2 Born Haber cycle s

Question 1

which is more unstable
cocl
cocl2
cocl3

Answer 1

cocl

lowest exothermic reaction

Question 2

which one has highest ionic bonding

Answer 2

agbr2
) silver bromide – greatest magnitude of lattice enthalpy (using real values, i.e. the experimental values)
c) silver bromide – greatest difference between experimental and theoretical lattice enthalpy values
d) silver bromide has significant covalent character

Question 3

way may ionic compounds be insoluble

Answer 3

high covalent character

Question 4

what is entropy

Answer 4

the disorder the more disorder the greater the enthalphy

Question 5

what is entropy measured in

Answer 5

j mol-1 k-1

Question 6

why is there a greater entropy change with gases than liquids

Answer 6

 the entropy increase from liquid to gas is
greater than that for solid to liquid due to the
large amount of disorder in gases compared
to solids and liquids.

Question 7

entropy equation

Answer 7

products- reactants

Question 8

gases move

Answer 8

rapidly and randomly

Question 9

solids move

Answer 9

vibfrate in fixed postitions

Question 10

liquids move

Answer 10

randomly, more slow

Question 11

solids have more

Answer 11

order