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Q2: Solve the given system of equation (VanLaar activity coefficient model) for A12 and A21. Given that ln1=A12(A12X1+A21X2A21X2)2ln2=A21(A12X1+A21X2A12X1)2 and 1=1.319,2=1.353,x1=0.628 and x1+x2=1

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