13 - further energetics

Question 1

standard enthalpy change of atomisation

Answer 1

the enthalpy change measured at a stated temp and pressure (usually 298K and 100kPa) when one mole of gaseous atoms is formed from an element in its standard state

Question 2

enthalpy change of solution

Answer 2

enthalpy change when one mole of an ionic solid dissolves in water to form an indefinitely dilute solution

Question 3

enthalpy change of hydration

Answer 3

enthalpy change when one mole of an ion in its gaseous state is completely hydrated by water

Question 4

entropy

Answer 4

is a property of matter that is associated with the degree of disorder, or degree of randomness, of the particles

Question 5

spontaneous process

Answer 5

one that takes place without continuous intervention from us