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Preparation of Nitric Acid

The chambers ...

Question

The chambers used in the industrial preparation of Nitric acid is/are :

A

absorption tower

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B

catalytic chamber

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C

oxidation chamber

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D

All of the above

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Solution

The correct option is D All of the above
The chambers used in the industrial preparation of Nitric acid are:
Absorption tower
Catalytic chamber
Oxidation chamber

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Q. Nitric acid is the most important oxi-acid formed by nitrogen. It is one of the major industrial chemicals and is widely used. Nitric acid is manufactured by the catalytic oxidation of ammonia that is known as Ostwald Process which can be represented by sequence of reactions shown below

4 N H_{3} + 5 O_{2} (g) C a t a l y s t - ---- \to P t / R h 4 N O (g) + 6 H_{2} O (g) . . . (i)

2 N O (g) + O_{2} (g) 1120 K - --- \to 2 N O_{2} (g) . . . (i i)

3 N O_{2} (g) + H_{2} O (l) \to 2 H N O_{3} (a q) + N O (g) . . . (i i i)

The aqueous nitric acid obtained by this method can be concenteated by distillation to

68.5 %

by weight. Further concentration to

98 %

acid can be achieved by dehydration with concentrated sulphuric acid.

85 k g

N H_{3} (g)

was heated with

320 k g

oxygen in the first step and

H N O_{3}

is prepared according to the above reactions. If the final solution has volume

500 L

, then molarity of

H N O_{3}

Q. The industrial preparation of nitric acid by Ostwald's process involves:

Q. Nitric acid is used in the preparation of:

Q. The first step in the manufacture of nitric acid is the catalytic oxidation of ammonia. Name the catalyst used.

Q. What is the catalyst used in the industrial manufacture of nitric acid?

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