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[Daily Question] Registered Exam Version 2019.12.11

2019-12-11View Original

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The vapor-liquid equilibrium relationship for ammonia solution follows Henry’s law, with a phase equilibrium constant of 0.75. If the molar fraction of ammonia in the solution is 0.025, then the molar ratio in the gas phase in equilibrium with it is ( ) A. 0.0192 B. 0.0188 C. 0.0185 D. 0.0256. The reference answer can be seen after responding; scoring is possible by identifying the correct key point. Answer: A is correct. 3 points for correctness, 1 point for error. For mass posting, the lowest score is assigned ; Replies that are unrelated to the answer are considered spam and will be deleted immediately.

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