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. c. Consider the given phase diagram of the A-B system. What is the melting point of A? What is the melting point of B? b. Draw T-t curves for cooling A-B solutions with xa=1XA = 0.7 and x = 0.4 from 100 °C down to room temperature. What is the freezing point of a solution containing 5 g of A (Mwt = 86 g/mol) and 15 g of B(Mwt= 105 g/mol). d. Determine graphically Au for pure A. Write True or False and explain your answer. CHCI, - Acetone system is an ideal solution X b. The dissolving process of KNO, in water is an exothermic process, wie V Addition of 100 ml 1.0 to 100 ml CH,OH gives 200 ml solution d. The molecular weight of benzoic acid as determined by the elevation of the boiling point of CCL, is greater than 122 g/mol (actual Mwt) 6. voad