Solutions and Colligative PropertieshardMCQ MULTIPLE

A laboratory technician prepares a binary solution of nitric acid () and water (). Which of the follSolutions and Colligative Properties Chemistry Question

Question

A laboratory technician prepares a binary solution of nitric acid ($HNO_3$) and water ($H_2O$). Which of the following experimental observations and theoretical deductions correctly characterize this specific mixture?

Answer: A,B,D

💡 Solution & Explanation

Nitric acid and water exhibit a strong negative deviation from Raoult's law due to strong hydrogen bonding and ionization interactions (A-B > A-A/B-B) (D). Therefore, vapor pressure drops ($P_{total} < P_{ideal}$) (B), and the process is exothermic ($\Delta H_{mix} < 0$) (A). Negative deviations form *maximum* boiling azeotropes, not minimum, making C incorrect.

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