(BLUE) Born Harber Cycles

Question 1

What is the definition of lattice enthalpy

Pg2

Answer 1

The energy released when one mole of an ionic solid compound in its standard state is formed from its constituent gaseous ions starting infinatly far apart

Question 2

What increases the negativity value of lattice enthalpy

Answer 2

SIZE AND CHARGE

Question 3

Why can we not accurately measure lattice enthalpy

Answer 3

Because things can not be infinitely far apart

Question 4

What is the definition of and also what does it do :
First ionising energy

Pg3

Answer 4

The energy required to remove 1 mole of electrons from 1 mole of gaseous atoms to produce one mole of gaseous ions

Basically ionises atoms

Na —> Na- +. e-

Question 5

What is the definition of and also what does it do :
Second ionisation energy

Pg3

Answer 5

The energy required for one mole of gaseous ions of +1 charge to produce one mole of gaseous ions of +2 normally under standard conditions

Na- ——> Na(2-) + e-

Question 6

What is the definition of and also what does it do pg3 :
Enthalpy of atomisation

Answer 6

The enthalpy change for the production of one mole of atoms in the gas phase from the elements in its standard state

Sst —> g

Question 7

What is the definition of and also what does it do pg3 :
First electron affinity

Answer 7

The enthalpy change when one mole of electrons are added to one mole of gaseous atoms to produce one mole of gaseous

I + e- ——> I-

Question 8

What is the definition of and also what does it do pg3 :
Enthalpy of formation

Answer 8

Enthalpy change when one mole of a substance in its standard state is formed from its elements in their standard state under standard conditions

Question 9

What is the definition of and also what does it do pg3 :
Lattice enthalpy

Answer 9

The energy released when 1 mole of ionic solids compound in its standard state is formed from its constituent gaseous ions starting infinitely far apart

Question 10

Draw born harder cycle

Answer 10

Check chem folder