The boiling points of oxygen and argon are and ,
Chapter 22, Problem 81(choose chapter or problem)
The boiling points of oxygen and argon are and , respectively. Because the boiling points are so similar, argon obtained from the fractional distillation of liquid air is contaminated with oxygen. The following three-step procedure can be used to obtain pure argon from the oxygen-contaminated sample: (1) Excess hydrogen is added to the mixture and then the mixture is ignited. (2) The mixture from step (1) is then passed over hot copper(II) oxide. (3) The mixture from step (2) is passed over a dehydrated zeolite material (see Chapter 21). Explain the purpose of each step, writing chemical equations for any reactions that occur.
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