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Which gas is likely to deviate most from ideal gas behaviour? A - CIE - A-Level Chemistry - Question 6 - 2018 - Paper 1
Question 6
Which gas is likely to deviate most from ideal gas behaviour? A. HCl B. He C. CH₄ D. N₂
Worked Solution & Example Answer:Which gas is likely to deviate most from ideal gas behaviour? A - CIE - A-Level Chemistry - Question 6 - 2018 - Paper 1
Step 1
Identify the characteristics of the gases
Answer
To determine which gas is most likely to deviate from ideal gas behavior, we need to consider factors like the size of the molecules and the strength of intermolecular forces. Generally, larger and polar molecules tend to have higher deviations.
Step 2
Analyze the gases given
Answer
- HCl: This is a polar molecule with some dipole-dipole interactions.
- He: This is a noble gas that is monoatomic and has weak London dispersion forces.
- CH₄: This molecule is nonpolar but larger than He, meaning it has more surface area for interactions.
- N₂: Like He, this is a nonpolar diatomic molecule with weaker attractions.
Step 3