SATHEE: Transition and InnerTransition Elements

Transition and InnerTransition Elements - Result Question 94

####21. Which series of reactions correctly represents chemical relations related to iron and its compound?

(2014 Main)

(a) $F e \overset{Dil. H_{2} S O_{4}}{\to} F e S O_{4} \overset{H_{2} S O_{4}, O_{2}}{\to} F e_{2} {(S O_{4})}_{3} \overset{Heat}{\to} F e$

(b) $F e \overset{O_{2}, Heat}{\to} F e O \overset{Dil. H_{2} S O_{4}}{\to} F e S O_{4} \overset{Heat}{\to} F e$

(d) $F e \overset{O_{2}, Heat}{\to} F e_{3} O_{4} \overset{C O, 600^{\circ} C}{\to} F e O \overset{C O, 700^{\circ} C}{\to} F e$

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Solution:

PLAN Analyse each reaction given in the question and choose the correct answer on the basis of oxidation state and stability of iron compounds. Use the concept of Ellingham diagram to solve this problem.

The correct reactions are as follows:

(a) $F e +$ dil. $H_{2} S O_{4} ⟶ F e S O_{4} + H_{2}$

$\begin{aligned} H_{2} S O_{4} + 2 F e S O_{4} + \frac{1}{2} O_{2} & ⟶ F e_{2} {(S O_{4})}_{3} + H_{2} O F e_{2} {(S O_{4})}_{3} \overset{Δ}{⟶} & F e_{2} O_{3} (s) + 3 S O_{3} ↑ \end{aligned}$

The given reaction is incorrect in question

Transition and InnerTransition Elements - Result Question 94

Solution:

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Transition and InnerTransition Elements - Result Question 94

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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