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When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS?
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When H2S gas is passed through the HCl containing aqueous solutions of...
Introduction
When hydrogen sulfide (H2S) gas is introduced to hydrochloric acid (HCl) solutions containing various metal salts, the behavior of these salts in terms of precipitation of metal sulfides varies. This is primarily due to the solubility products (Ksp) of the sulfides formed.
Metal Salts and Their Sulfides
- CuCl2 (Copper(II) Chloride):
- When H2S is bubbled through a solution of CuCl2, copper(II) sulfide (CuS) precipitates out as it is insoluble in water.
- Ksp of CuS is low, favoring precipitation.
- HgCl2 (Mercury(II) Chloride):
- HgS precipitates when H2S is passed through HgCl2 solution.
- HgS is also insoluble, leading to the formation of a black precipitate.
- BiCl3 (Bismuth(III) Chloride):
- Bismuth sulfide (Bi2S3) forms upon the introduction of H2S to BiCl3, resulting in a precipitate.
- The Ksp for Bi2S3 is very low, promoting precipitation.
- CoCl2 (Cobalt(II) Chloride):
- Unlike the above salts, CoS does not readily precipitate in the presence of H2S.
- Cobalt sulfide is relatively soluble in aqueous solutions, particularly in the presence of HCl, leading to the conclusion that it remains dissolved.
Conclusion
In summary, while H2S gas causes CuS, HgS, and Bi2S3 to precipitate from their respective solutions, CoS remains dissolved due to its higher solubility. Thus, the correct answer is:
D) CoS
When hydrogen sulfide (H2S) gas is introduced to hydrochloric acid (HCl) solutions containing various metal salts, the behavior of these salts in terms of precipitation of metal sulfides varies. This is primarily due to the solubility products (Ksp) of the sulfides formed.
Metal Salts and Their Sulfides
- CuCl2 (Copper(II) Chloride):
- When H2S is bubbled through a solution of CuCl2, copper(II) sulfide (CuS) precipitates out as it is insoluble in water.
- Ksp of CuS is low, favoring precipitation.
- HgCl2 (Mercury(II) Chloride):
- HgS precipitates when H2S is passed through HgCl2 solution.
- HgS is also insoluble, leading to the formation of a black precipitate.
- BiCl3 (Bismuth(III) Chloride):
- Bismuth sulfide (Bi2S3) forms upon the introduction of H2S to BiCl3, resulting in a precipitate.
- The Ksp for Bi2S3 is very low, promoting precipitation.
- CoCl2 (Cobalt(II) Chloride):
- Unlike the above salts, CoS does not readily precipitate in the presence of H2S.
- Cobalt sulfide is relatively soluble in aqueous solutions, particularly in the presence of HCl, leading to the conclusion that it remains dissolved.
Conclusion
In summary, while H2S gas causes CuS, HgS, and Bi2S3 to precipitate from their respective solutions, CoS remains dissolved due to its higher solubility. Thus, the correct answer is:
D) CoS
Community Answer
When H2S gas is passed through the HCl containing aqueous solutions of...
C)Bi2s3
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When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS?
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When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS?.
When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When H2S gas is passed through the HCl containing aqueous solutions of CuCl2, HgCl2, BiC3, CoCl2, it doesn't precipitate out A) CuS B) HgS C) Bi2S3 D) CoS?.
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