acids,bases and ions in aqueous solution

physical properties of water:

• mp-273 K
• bp-373K
• enthalpy of fusion-6.01 kJ/mol
• enthalpy of vaporization-40.65kJ/mol
• entropy of vaporization-109kJ/mol

1 molar= one mole solute dissolved in water to give 1litre solution

• + Ka,+ acidity
• - pKa,+acidity
• -pKb,+Kb,+basicity

*oxoacid= a compoud contains oxygen, at least one other element, at least one hydrogen bound to oxygen,and which produces a conjugate base by proton loss.

*lewis acid: electron acceptor, lewis base: electron donor
*hydration: solvation by water
*amphoteric: oxide / hydroxide can act as acid / base.