Use Enthalpy/ composition diagram of Sulphuric acid/ water system to answer the following questions. Show working on the diagram, and attach the diagram to the script (failing which marks would not be awarded) (i) Estimate heat evolved (kJ) when 100g of pure H2SO4 and 100g of water, each at 0C, are mixed isothermally? [5 marks] (ii) If 20wt% solution of H2SO4 at 0C, is mixed adiabatically with pure H2SO4 at 65.6C to form a 60wt% solution, find the final temperature. [2 marks] (iii) For case (ii) above, estimate the heat (kJ/kg) to be added/removed to produce the final solution at 65.6C ? [3 marks] (iv) For case (ii) above, how much heat (kJ/kg) will have to be added/ removed to produce the solution at its boiling point? [ 3 marks]