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Strong and Weak Acids and Bases

Nitric acid i...

Question

Nitric acid is an isomer since it can be represented two structures.

A

True

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B

False

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Solution

The correct option is A
True

The structure of nitric acid can be represented in two ways. The second structure of nitric acid is obtained by flipping the nitrogen end in the first structure. Both structures are different due to the presence of coordinate bonds.

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Similar questions

Q. How many structural isomers can be represented by alkane,

C_{5} H_{10}

H_{3} P O_{3}

can be represented by structures 1 and 2 shown above. Can these two structures be taken as the canonical forms of the resonance hybrid representing

H_{3} P O_{3}

? If not, give reasons for the same.

Q. Ortho-boric acid can be represented as

B {(O H)}_{3}

Q. (a) Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO₃. State the reason.
(b) How can 68% nitric acid be concentrated to 98% nitric acid?

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.

If

180 L

of water completely reacts with

N O_{2}

produced to form nitric acid according to the above reactions, then the volume of air required at STP containing

20 %

N O_{2}

is:
(density of water is 1 g/mL)

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