Oxygen,argon and nitrogen boil at -182°c,-186°c and -196°c respectively.Answer the following questions:(a)Arrange the following in the increasing value of boiling point. (b)Which gas forms the liquid first as the air is cooled?(c)Which gas is obtained first when liquid air boils up?
Answers
nitrogen > argon > oxygen
B)
Nitrogen will becomes liquid first
C)
oxygen boils first
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Given,
Oxygen, argon, and nitrogen boil at -182°c,-186°c, and -196°c respectively.
To find,
Arrange in the increasing value of the boiling point.
Which gas forms the liquid first as the air is cooled?
Which gas is obtained first when liquid air boils up?
Solution,
As the boiling points are given in the question, The increasing order of the boiling points is Nitrogen < Argon < Oxygen.
Nitrogen will cool down first as the air is cooled since its boiling point is the lowest among the three elements.
Oxygen gas is obtained first liquid air boils up since the boiling point of oxygen is greater it boils faster and changes its state from liquid to gas.
Hence, The increasing order of the boiling points is Nitrogen < Argon < Oxygen, Nitrogen will cool down first as the air is cooled, and Oxygen gas is obtained first liquid air boils up.