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Inserir no projetoP3020761Determinação da entalpia de hidratação de um eletrólito (entalpia de solução) com Cobra4

Principle

When a solid electrolyte dissolves in water, a positive or negative heat effect occurs as a result of the destruction of the crystal lattice and the formation of hydrated ions. The enthalpy of hydration of copper sulphate can be calculated from the different heats of reaction measured when anhydrous and hydrated copper sulphate are separately dissolved in water.

Tasks

  1. Record temperature-time curves for the dissolution of anhydrous copper sulphate and hydrated copper sulphate in water.
  2. Calculate the hydration enthalpy of anhydrous copper(II)sulphate.

What you can learn about

  • Integral enthalpy of solution
  • Hess's law
  • Lattice energy
  • Ion solvation
  • Calorimetry