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Standard XII

Chemistry

Wurtz Halide Reaction

Assertion : ...

Question

Assertion : $H_{2} (g) + C l_{2} (g) ⟶ 2 H C l (g) + 185 k J$ . This reaction is exothermic. Reason: Heat is being evolved.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In the given reaction,
185kJ heat is being evolved.
Hence, the reaction is exothermic
So, option A is correct

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Similar questions

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) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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

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: Be and Al have similar properties.

Reason: $B e^{2 +}$ and $A l^{3 +}$ have nearly the same charge/volume ratios and similar polarising power.

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Assertion :H2(g)+Cl2(g)⟶2HCl(g)+185kJ. This reaction is exothermic. Reason: Heat is being evolved.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionIn the given reaction,185kJ heat is being evolved.Hence, the reaction is exothermicSo, option A is correct

Assertion : $H_{2} (g) + C l_{2} (g) ⟶ 2 H C l (g) + 185 k J$ . This reaction is exothermic. Reason: Heat is being evolved.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In the given reaction,
185kJ heat is being evolved.
Hence, the reaction is exothermic
So, option A is correct