Pick out the wrong statement:

• The integral heat of solution of either components can not be calculated from heat of mixing data.
• The average value of heat of neutralisation of dilute solutions of weak acids and bases is much less compared to that for strong acids and bases.
• The standard heat of solution of the hydrate of a substance is the difference between the heat of solution of the anhydrous substance and its heat of hydration.
• The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the nature & amount of the solute & the solvent, on the temperature & on the initial & final concentrations of the solution.