enthalpy change of solution/ hydration

Question 1

define the enthalpy change of solution

Answer 1

” “ when a compound dissolves in one mole solute dissolves in a solution (if the solution is water then an ionic attic forms) and it can be exothermic or endothermic.

Question 2

define enthalpy change of hydration

Answer 2

the enthalpy change that accompanies the dissolving of gaseous ions in water to form one mole of aq ions.

Question 3

describe the factors effecting hydration enthalpy

Answer 3

the greater the charge density/ ionic charge, the smaller the ionic radius and the greater the attraction for water molecules the more exothermic the enthaply change.