Leaving Cert Chemistry OPTION : Atmospheric Chemistry: Oxygen (O₂) and nitrogen (N₂) ar

Question

Oxygen (O₂) and nitrogen (N₂) are separated industrially by the fractional distillation of liquefied air in a column like that shown.

(i) Give two major uses of nitrogen.

(ii) Name two components of the air feedstock that are removed prior to fractional distillation.

(iii) Explain how the air intake is liquefied prior to fractional distillation.

(iv) Which of the products, A or B, has the lower boiling point?

(v) Which of the products, A or B, is oxygen?

or

B

(iii) Draw structures to show the differences that occur in the bonding in three ethene molecules when they undergo addition polymerisation and become part of a polyethylene chain.

(ii) Give two differences in properties, other than the difference in density, between LDPE or low-density polyethene and HDPE or high-density polyethene.

(iii) LDPE was first synthesised industrially in 1933 but HDPE was not produced until the early 1950s.
What were the differences between the conditions used for the production of LDPE and HDPE?

Oxygen (O₂) and nitrogen (N₂) are separated industrially by the fractional distillation of liquefied air in a column like that shown - Leaving Cert Chemistry - Question c - 2018

Worked Solution & Example Answer:Oxygen (O₂) and nitrogen (N₂) are separated industrially by the fractional distillation of liquefied air in a column like that shown - Leaving Cert Chemistry - Question c - 2018

Give two major uses of nitrogen.

Name two components of the air feedstock that are removed prior to fractional distillation.

Explain how the air intake is liquefied prior to fractional distillation.

Which of the products, A or B, has the lower boiling point?

Which of the products, A or B, is oxygen?

Join the Leaving Cert students using SimpleStudy...