Question:
Which of the following gas has highest solubility in water at 298 K?
Which of the following gas has highest solubility in water at 298 K?
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Polar gases with hydrogen bonding dissolve much better in water than non-polar gases.
Updated On: Apr 24, 2026
- Formaldehyde
- Methane
- \(CO_2\)
- Vinyl chloride
- Argon
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The Correct Option is A
Solution and Explanation
Concept:
Solubility of gases in water depends on:
• Polarity
• Ability to form hydrogen bonds
• Chemical interaction with water
Step 1: Analyze gases.
• Formaldehyde $\rightarrow$ Polar, forms hydrogen bonds → highly soluble
• Methane $\rightarrow$ Non-polar → low solubility
• \(CO_2\) $\rightarrow$ Moderately soluble
• Vinyl chloride $\rightarrow$ Low polarity
• Argon $\rightarrow$ Noble gas, very low solubility
Step 2: Select highest solubility.
Formaldehyde has maximum interaction with water.
• Polarity
• Ability to form hydrogen bonds
• Chemical interaction with water
Step 1: Analyze gases.
• Formaldehyde $\rightarrow$ Polar, forms hydrogen bonds → highly soluble
• Methane $\rightarrow$ Non-polar → low solubility
• \(CO_2\) $\rightarrow$ Moderately soluble
• Vinyl chloride $\rightarrow$ Low polarity
• Argon $\rightarrow$ Noble gas, very low solubility
Step 2: Select highest solubility.
Formaldehyde has maximum interaction with water.
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