Cylinders of NO Gas May Contain Small Quantities of Oxygen

question 31

Multiple Choice

Cylinders of NO gas may contain small quantities of oxygen as impurities, leading to the formation of NO₂ in equilibrium with the NO and oxygen. Is this contamination by NO₂ dependent on pressure in the tank?

• A) Yes, there will be more NO₂ at higher pressures.
• B) Yes, there will be less NO₂ at higher pressures.
• C) No, the amount of NO₂ has nothing to do with pressure.
• D) No, the amount of NO₂ depends on the partial pressure, not the total pressure.
• E) There is no way to tell without additional information.

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