Consider a solution of two similar liquids which are miscible in all proportions over a wide range of temperature. The excess Gibbs energy of this solution is adequately represented by the equation gE = Ax2 where A is a constant depending only on temperature. Over a wide range of temperature the ratio of the vapor pressures of the pure components is constant and equal to 1.649. Over this same range of temperature the vapor phase may be considered ideal. We want to find out whether or not this solution has an azeotrope. Find the range of values ​​A may have for azeotropy to occur.