fuck lattice enthalpy

Question 1

lattice enthalpy

Answer 1

formation of one mol of ionic solid from its gaseous ions under standard conditions

• used as a measure of strength of ionic bonding in giant ionic lattice

Question 2

enthalpy change of solution

Answer 2

dissolving one mol of solute completely in water

Question 3

enthalpy change of hydration

Answer 3

dissolving one mol of gaseous ions in water to form one mole of aqueous ions

Question 4

entropy

Answer 4

measure of the dispersal of energy in a system

Question 5

Gibbs free energy

Answer 5

delta G = delta H - T delta S

Question 6

process is feasible when delta G

Answer 6

<0

Question 7

the value of lattice enthalpy is always…..

Answer 7

exothermic

Question 8

steps needed for lattice enthalpy to be able to happen

Answer 8

formation

atomisation (make metal gaseous)
first IE (to form metal ions)
atomisation (make non metal gaseous)
affinity (form non metal ions)

lattice enthalpy

Question 9

enthalpy change of formation

Answer 9

enthalpy change when one mol of a compound is formed from its constituent elements in their standard states under standard conditions

Question 10

enthalpy change of atomisation (?)

Answer 10

enthalpy required to produce one mol of gaseous atoms from the element in its standard state

Question 11

first electron affinity (?)

Answer 11

enthalpy change when one mole of gaseous atoms of an element is converted to one mole of singly charged negative gaseous ions

Question 12

enthalpy change of hydration is always…. because….

Answer 12

exothermic

bonds are formed

Question 13

enthalpy change of solution =

Answer 13

-LE +sum of hydration