A solution of Nitric acid () and water exhibits a massive negative deviation from Raoult's law. Consequently, at a specific concentration ( by mass), this mixture will form:

Question

A solution of Nitric acid ($HNO_3$) and water exhibits a massive negative deviation from Raoult's law. Consequently, at a specific concentration ($68\%$ by mass), this mixture will form:

Prashant Kotian · Accepted Answer

Correct answer: C. Negative deviations from Raoult's law depress the total vapour pressure curve, forming a minimum. A minimum in vapour pressure corresponds thermodynamically to a maximum in the boiling point, yielding a maximum boiling azeotrope.

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