11 grade chemistry others
Which of the following is the most volatile compound?
(A) HI
(B) HCl
(C) HBr
(D) HF
Which of the following is the most volatile compound?
(A) HI
(B) HCl
(C) HBr
(D) HF
1 Answer
Askiitians Tutor Team
The volatility of a compound generally increases with decreasing boiling point and increasing vapor pressure. In this case, we can compare the boiling points of the given hydrogen halides:
(A) HI: Boiling point = -35.6°C
(B) HCl: Boiling point = -85.1°C
(C) HBr: Boiling point = -67.1°C
(D) HF: Boiling point = 19.5°C
From the given options, HF has the highest boiling point, indicating it has the lowest volatility among the options. Therefore, the most volatile compound among the given options is (A) HI.
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