Transition And Innertransition Elements
- Transition and InnerTransition Elements - Result Question 1
- Transition and InnerTransition Elements - Result Question 9 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 2
- Transition and InnerTransition Elements - Result Question 11 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 3
- Transition and InnerTransition Elements - Result Question 4
- Transition and InnerTransition Elements - Result Question 5
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- Transition and InnerTransition Elements - Result Question 37
- Transition and InnerTransition Elements - Result Question 38
- Transition and InnerTransition Elements - Result Question 39 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 8
- Transition and InnerTransition Elements - Result Question 42
- Transition and InnerTransition Elements - Result Question 43
- Transition and InnerTransition Elements - Result Question 44
- Transition and InnerTransition Elements - Result Question 45
- Transition and InnerTransition Elements - Result Question 9 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 46 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 48 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 51 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 53
- Transition and InnerTransition Elements - Result Question 54
- Transition and InnerTransition Elements - Result Question 11 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 55
- Transition and InnerTransition Elements - Result Question 56 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 58 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 12
- Transition and InnerTransition Elements - Result Question 60
- Transition and InnerTransition Elements - Result Question 61 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 63 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 13
- Transition and InnerTransition Elements - Result Question 66
- Transition and InnerTransition Elements - Result Question 67
- Transition and InnerTransition Elements - Result Question 68
- Transition and InnerTransition Elements - Result Question 69
- Transition and InnerTransition Elements - Result Question 14
- Transition and InnerTransition Elements - Result Question 70
- Transition and InnerTransition Elements - Result Question 71
- Transition and InnerTransition Elements - Result Question 72
- Transition and InnerTransition Elements - Result Question 73
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- Transition and InnerTransition Elements - Result Question 16
- Transition and InnerTransition Elements - Result Question 17
- Transition and InnerTransition Elements - Result Question 18
- Transition and InnerTransition Elements - Result Question 19
- Transition and InnerTransition Elements - Result Question 20
- Transition and InnerTransition Elements - Result Question 21
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- Transition and InnerTransition Elements - Result Question 31
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- Transition and InnerTransition Elements - Result Question 33
- Transition and InnerTransition Elements - Result Question 34
- Transition and InnerTransition Elements - Result Question 35
- Transition and InnerTransition Elements - Result Question 39 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 40
- Transition and InnerTransition Elements - Result Question 46 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 48 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 49
- Transition and InnerTransition Elements - Result Question 51 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 56 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 58 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 61 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 63 — JEE PYQ Chapterwise
- Transition and InnerTransition Elements - Result Question 64
- Transition and InnerTransition Elements - Result Question 74
Transition and InnerTransition Elements - Result Question 43
43. $\mathrm{Fe}^{3+}$ is reduced to $\mathrm{Fe}^{2+}$ by using
(2015 Adv.)
(a) $\mathrm{H}_2 \mathrm{O}_2$ in presence of NaOH
(b) $\mathrm{Na}_2 \mathrm{O}_2$ in water
(c) $\mathrm{H}_2 \mathrm{O}_2$ in presence of $\mathrm{H}_2 \mathrm{SO}_4$
(d) $\mathrm{Na}_2 \mathrm{O}_2$ in presence of $\mathrm{H}_2 \mathrm{SO}_4$
Show Answer
Answer:
Correct Answer: 43. (a,b)
Solution: $\mathrm{H}_2 \mathrm{O}_2$ is alkaline medium acts as reducing agent, reduces $\mathrm{Fe}^{3+}$ to $\mathrm{Fe}^{2+}$. In acidic medium the same $\mathrm{H}_2 \mathrm{O}_2$ oxidises $\mathrm{Fe}^{2+}$ to $\mathrm{Fe}^{3+}$.
BETA
