Why is conc- HCl not used in place of conc- H 2 SO 4 in the laboratory preparation of nitric acid-A- HCl is an acidB- HCl is a strong baseC- HCl is volatileD- Conc- HCl slows down the reaction

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Preparation of Nitric Acid

Why is conc. ...

Question

Why is conc. $H C l$ not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid?

HCl is an acid

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HCl is a strong base

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HCl is volatile

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Conc. HCl slows down the reaction

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Solution

The correct option is C
HCl is volatile

Conc. $H C l$ is not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid because $H C l$ is volatile. The $H C l$ vapours will contaminate the nitric acid vapours obtained from the reaction.

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Similar questions

Q. (a) How is nitric acid prepared in laboratory?
(b) What is the purpose of conc. H₂SO₄ in the above preparation?
(c) Why is the temperature maintained at 200°C in the above reaction?
(d) Can we use conc. HCl in place of conc. H₂SO₄?

In the laboratory preparation of $H C l$ gas, the drying agent used conventionally (conc. $H_{2} S O_{4}$ ) can be replaced by quicklime & phosphorous pentoxide.

What is the role of concentrated $H_{2} S O_{4}$ in the laboratory preparation of nitric acid?

Q. Assertion: Dehydration of alcohols can be carried out with conc.

H_{2} S O_{4}

but not with conc.

H C l

.
Reason:

H_{2} S O_{4}

is dibasic while

H C l

is monobasic.

Q. Complete and balance the following reactions: [4 MARKS]
(a)

K C l + H_{2} S O_{4} (c o n c .) \to

(b)

C u + H C l (d i l .) \to

(c)

C u O + H C l (d i l .) \to

(d)

C u O + [O] H C l (c o n c .) \to

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Why is conc. HCl not used in place of conc. H2SO4 in the laboratory preparation of nitric acid?

The correct option is C HCl is volatile Conc. HCl is not used in place of conc. H2SO4 in the laboratory preparation of nitric acid because HCl is volatile. The HCl vapours will contaminate the nitric acid vapours obtained from the reaction.

Why is conc. $H C l$ not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid?

The correct option is C
HCl is volatile

Conc. $H C l$ is not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid because $H C l$ is volatile. The $H C l$ vapours will contaminate the nitric acid vapours obtained from the reaction.