Please answer all the above questions correctly providing necessary formulae, equations, expressions, diagrams, graphs, charts and tables.

a) Explain the effect of temperature on different types of liquid- liquid equilibrium. 5 (b) Mention the design calculations for a single stage mixer settler device using equilibrium plot on equilateral triangular coordinates 5 c) Breakthrough data of acetone in air flowing through a bed of adsorbent are given in Table 1. Calculate (i) Breakthrough time if breakthrough concentration is 2.5% of feed concentration. (ii) The velocity of stoichiometric front and fraction of bed utilised. (iii) The length of unused bed