Question
Which from following gases is least soluble in water under same conditions of temperature and pressure ?
MHT CET
Chemistry
Chemical Bonding and Molecular Structure
2026
MHT CET 2026 (19 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. HCl
- B. CO _2
- C. NH _3
- D. O _2
Answer
D. O _2
Step-by-step solution
Water is a polar solvent. Gases that are polar, can form hydrogen bonds, or react with water are highly soluble in it. HCl and NH _3 are highly soluble due to ionization and hydrogen bonding, respectively. CO _2 is moderately soluble as it reacts with water to form carbonic acid. O _2 is a non-polar gas and interacts with water only through weak dipole-induced dipole forces, making it the least soluble among the given gases. Answer: O _2
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