Task 1: Hess's Law of Constant Heat Summation states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes. Discuss 2 cases where Hess's law can be applied to calculate enthalpies of reactions that are difficult to measure directly.
Answer should include technical discussion on chemical reaction, data and explanations.
(Word limit 450 words)
Task 2: Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. Explain complete process of electroplating by taking a suitable example from electroplating industry.
Answer should include a neatly labelled diagram, discussion on selection of electrolyte, suitable electrodes, surface preparation, bath preparation, chemical reaction etc. (Word limit 350 words)