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Standard XII

Chemistry

SN1 Reaction Mechanism

Assertion :Fi...

Question

Assertion :Finely divided iron does not form ferric chloride with hydorchloric acid. Reason: Hydrochloric acid produces hydrogen gas with iron.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$F e + 2 H C l \to F e C l_{2} + H_{2}$
Liberation of hydrogen prevents the oxidation of ferrous chloride to ferric chloride.

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Similar questions

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion

Lithium sulphate does not form alums.

Reason

$L i^{+}$ is too small to form a stable lattice required for double-salt/alum formation.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :Finely divided iron does not form ferric chloride with hydorchloric acid. Reason: Hydrochloric acid produces hydrogen gas with iron.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionFe+2HCl→FeCl2+H2Liberation of hydrogen prevents the oxidation of ferrous chloride to ferric chloride.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$F e + 2 H C l \to F e C l_{2} + H_{2}$
Liberation of hydrogen prevents the oxidation of ferrous chloride to ferric chloride.