Class 11th Chemistry NCERT Exemplar Solutions Class 11th Chapter Eight Redox Reactions Redox Reactions Chemistry Ncert Solutions Chemistry Class 11th

(ii) Reaction of liquid hydrazine (N₂H₄ ) with chlorate ion (ClO₃^–) in basic medium produces nitric oxide gas and chloride ion in gaseous state. (Balance by oxidation number method)

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Alok Kumar Singh | Contributor-Level 10

10 months ago

This is a Short answer type question as classified in NCERT Exemplar

We can balance the given reaction by oxidation number method-

Balancing by oxidation number method as to make the electron gain and loss equal as given

3N₂H₄ + 4ClO₃^-? 6NO + 4Cl^-+ 6H₂O

The balanced chemical is given as-

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How many of these compounds will undergo disproportionation on hydrolysis? CO?, NO?, Cl?, F?, ClO?, Cl?O?, N?O?, SO?, P?O??

$\overset{\overset{+ 4}{{N O}_{2}}}{2} + H_{2} O \to \overset{+ 3}{{H N O}_{2}} + \overset{+ 5}{H N O}_{3}$

$\overset{0}{{C l}_{2}} + H_{2} O \to \overset{- 1}{H C l} + H O C l$

$2 \overset{+ 4}{{C l O}_{2}} + H_{2} O \to \overset{+ 3}{{H C l O}_{2}} + \overset{+ 5}{{H C l O}_{3}}$

$\overset{+ 6}{{C l}_{2}} O_{6} + H_{2} O \to \overset{+ 5}{{H C l O}_{3}} + \overset{+ +^{+}}{{C l O}_{4}}$

40. Best reducing agent is:
(a) He (b) Be (c) Li (d) Al

Kindly go through the solution

(c) Li

37. Which element is considered to have oxidation number of +3 in all its compounds?

(a) Be (b) Li (c) Al (d) Sc

Kindly go through the solution

(c) Al

36. Oxidation number ofS in S₂O₈^-2is

(a) -2 (b) -6 (c) +2 (d) +6

Kindly go through the solution

(d) +6

32. Assertion: Na⁺ ion has an oxidation number of +1, Mg²⁺ ion, +2, Fe³⁺ion, +3, Cl^– ion, –1, O^2– ion, –2; and so on.

Reason: For ions composed of only one atom, the oxidation number is equal to the charge on the ion.

Kindly go through the solution

(a)

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Chemistry NCERT Exemplar Solutions Class 11th Chapter Eight 2025

Chemistry NCERT Exemplar Solutions Class 11th Chapter Eight 2025

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