Pure water boils at 373 K and pure nitric acid boils at 359 K. The azeotropic mixture of water and nitric acid boils at T K. Then,
a) T < 359 K
b) T > 359 K
c) T < 373 K but > 359 K
d) Unpredictable

Answer given is b. Kindly explain how 

 A solution that shows large negative deviation from Raoult's law forms a maximum boiling azeotrope at a specific composition. Nitric acid and water is an example of this class of azeotrope. This azeotrope has an approximate composition of 68% nitric acid and 32% water by mass.
because of less composition of water T > 359K because dependency of temperature is intentionally proportional to the solvent part in the azeotropic mixture and in their solution water part is less that's why T>359.
regards

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