Assertion : $[F e (C N)_{6}]^{4 -} \to F e^{3 +} + C O_{2} + N O_{3}^{-}$ , the equivalent weight of reactant is $3.74$ . Reason: Equivalent weight of reactant $= \frac{M o l . w t .}{61}$

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 D Assertion is incorrect but Reason is correct
In $[F e (C N)_{6}]^{4 -} \to F e^{3 +} + C O_{2} + N O_{3}^{-}$
Change in oxidation state of Fe $= 3 - 2 = 1$
Change in oxidation state of C $= 4 - 2 = 2$
Change in oxidation state of N $= 5 - (- 3) = 8$
So, equivalent weight of $[F e (C N)_{6}]^{4 -} = \frac{M o l . w t .}{1 + 6 \times (2 + 8)} = \frac{M o l . w t .}{61}$

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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

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and

H e

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Q. Assertion: In the reaction:

2 N a O H + H_{3} P O_{4} \to N a_{2} H P O_{4} + 2 H_{2} O

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Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(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 (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

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Assertion :[Fe(CN)6]4−→Fe3++CO2+NO−3, the equivalent weight of reactant is 3.74. Reason: Equivalent weight of reactant=Mol.wt.61

The correct option is D Assertion is incorrect but Reason is correctIn [Fe(CN)6]4−→Fe3++CO2+NO−3Change in oxidation state of Fe =3−2=1Change in oxidation state of C =4−2=2Change in oxidation state of N =5−(−3)=8So, equivalent weight of [Fe(CN)6]4−=Mol.wt.1+6×(2+8)=Mol.wt.61

Assertion : $[F e (C N)_{6}]^{4 -} \to F e^{3 +} + C O_{2} + N O_{3}^{-}$ , the equivalent weight of reactant is $3.74$ . Reason: Equivalent weight of reactant $= \frac{M o l . w t .}{61}$