Industrial Processes

What is the mass of nitrogen in 1.0 kg of ammonium nitrate?

(Relative atomic masses: H = 1.0, N = 14.0,

O = 16.0)

• 0.18 kg

• 0.35 kg

• 0.47 kg

• 0.63 kg

Which of the following gases is/are the component(s) of syngas?

(1) Methane

(2) Hydrogen

(3) Carbon monoxide

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Consider the Haber process:

N₂(g) + 3H₂(g) <==> 2NH₃(g) ΔH = –92 kJ mol^–1

Which of the following actions can shift the equilibrium position to the right?

(1) Increasing the pressure

(2) Increasing the temperature

(3) Adding a catalyst

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

Iron is the catalyst used in the Haber process. Which of the following statements about the action of iron in the process is/are correct?

(1) It increases the rate of forward reaction more than that of the backward reaction.

(2) It shortens the time to reach equilibrium.

(3) It shifts the equilibrium position to the product side.

• (1) only

• (2) only

• (1) and (3) only

• (2) and (3) only

If 12.8 g of NH₃ is completely oxidized to HNO₃, what is the theoretical yield of HNO₃?

(Relative atomic masses: H = 1.0, N = 14.0, O = 16.0)

• 27.7 g

• 47.4 g

• 66.5 g

• 94.5 g

Which of the following statements about the production of ammonium nitrate from nitric acid and ammonia is INCORRECT?

• The reaction is exothermic.

• The reaction is a redox reaction.

• Ammonia is manufactured by the Haber process.

• Nitric acid is manufactured by the catalytic oxidation of ammonia.

Consider the following set-up used to oxidize ammonia in the presence of red hot platinum wire.

The platinum wire can be kept red hot

throughout the reaction. Which of the following

is a possible reason for this?

• Ammonia reacts with oxygen exothermically and the heat given out keeps the platinum wire red hot.

• Oxygen supports the burning of platinum wire and makes it red hot.

• Ammonia reacts with platinum wire to give a large amount of heat and keeps it red hot.

• Nitrogen monoxide formed reacts with platinum wire to give a large amount of heat that keeps it red hot.

Refer to the following reaction in the production of urea:

2NH₃ + CO₂ ---> X ---> (NH₂)₂CO + H₂O

Which of the following is the possible formula of X?

• H₂NCONH₄

• H₂NCOONH₂

• H₃NCOONH₃

• H₂NCOONH₄

Refer to the following reaction in the production of urea:

2NH₃ + CO₂ ---> X ---> (NH₂)₂CO + H₂O

If 17.0 g of NH3 is used in the reaction and 24.0 g of urea is produced, what is the percentage yield of urea for the reaction?

(Relative atomic masses: H = 1.0, C = 12.0, N = 14.0,

O = 16.0)

• 60%

• 70%

• 80%

• 90%