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 acid-B- HCl is a strong base-C- Conc- HCl can be used-D- HCl is volatile-

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Standard X

Chemistry

Preparation of Nitric Acid

Why is conc. ...

Question

Why is conc. HCl 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 can be used.

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Solution

The correct option is C
HCl is volatile.

Conc. HCl is not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid because HCl is volatile and hence nitric acid vapours will carry HCl vapours.

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Similar questions

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.

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?

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.

H C l

is prepared by heating

N a C l

with conc.

H_{2} S O_{4}

but

H I

cannot be prepared by treating

N a I

with conc.

H_{2} S O_{4}

. Identify the reason.

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 and hence nitric acid vapours will carry HCl vapours.

Why is conc. HCl 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. HCl is not used in place of conc. $H_{2} S O_{4}$ in the laboratory preparation of nitric acid because HCl is volatile and hence nitric acid vapours will carry HCl vapours.