Identify the substance oxidised- reduced- oxidising agent and reducing agent for each of the following reactions-a 2 AgBr s - C 6 H 6 O 2 aq - 2 Ag s -2 HBr aq - C 6 H 4 O 2 aq b HCHO l -2- Ag NH 32- aq -3 OH - aq - 2 Ag s - HCOO - aq -4 NH 3 aq -2 H 2 O l c HCHO l -2 Cu 2- aq -5 OH - aq - Cu 2 O s - HCOO - aq -3 H 2 O l d N 2 H 4 l -2 H 2 O 2 l - N 2 g -4 H 2 O l e Pb s - PbO 2 s -2 H 2 SO 4 aq - 2 PbSO 4 s -2 H 2 O l

(a) Oxidised substance → C6H6O2 Reduced substance → AgBr Oxidising agent → AgBr Reducing agent → C6H6O2 (b)Oxidised substance → HCHO Reduced substance → O ...

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Byju's Answer

Standard XII

Chemistry

Introduction

Identify the ...

Question

Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions:

(a) 2AgBr (s) + C₆H₆O₂(aq) → 2Ag(s) + 2HBr (aq) + C₆H₄O₂(aq)

(b) HCHO(l) + 2[Ag (NH₃)₂]⁺(aq) + 3OH^–(aq) → 2Ag(s) + HCOO^–(aq) + 4NH₃(aq) + 2H₂O(l)

(c) HCHO (l) + 2Cu²⁺⁽aq) + 5 OH^–(aq) → Cu₂O(s) + HCOO^–(aq) + 3H₂O(l)

(d) N₂H₄(l) + 2H₂O₂(l) → N₂(g) + 4H₂O(l)

(e) Pb(s) + PbO₂(s) + 2H₂SO₄(aq) → 2PbSO₄(s) + 2H₂O(l)

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Solution

(a) Oxidised substance → C₆H₆O₂

Reduced substance → AgBr

Oxidising agent → AgBr

Reducing agent → C₆H₆O₂

(b)Oxidised substance → HCHO

Reduced substance →

Oxidising agent →

Reducing agent → HCHO

(c) Oxidised substance → HCHO

Reduced substance → Cu²⁺

Oxidising agent → Cu²⁺

Reducing agent → HCHO

(d) Oxidised substance → N₂H₄

Reduced substance → H₂O₂

Oxidising agent → H₂O₂

Reducing agent → N₂H₄

(e) Oxidised substance → Pb

Reduced substance → PbO₂

Oxidising agent → PbO₂

Reducing agent → Pb

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Similar questions

Q. Identify the substance oxidised, reduced, oxidising agent and reducing agent for the following reaction.

{H C H O}_{(l)} + 2 [A g (N H_{3})_{2}]_{(a q)}^{+} + 3 O H_{(a q)}^{-} \to 2 A g_{(s)} + H C O O_{(a q)}^{-} + 4 {N H_{3}}_{(a q)} + 2 {H_{2} O}_{(l)}

Q. Identify the substance oxidised, reduced, oxidising agent and reducing agent for the following reaction-

2 A g B r (s) + C_{6} H_{6} O_{2} (a q) \to 2 A g (s) + 2 H B r (a q) + C_{6} H_{4} O_{2} (a q)

Q. From the following reactions, determine if

A g^{+}

is a stronger oxidizing agent than

C u^{2 +}

.
(a)

H_{3} P O_{2} (a q) + 4 A g N O_{3} (a q) + 2 H_{2} O (l) \to H_{3} P O (a q) + 4 A g (s) + 4 H N O_{3} (a q)

(b)

H_{3} P O_{2} (a q) + 2 C u S O_{4} (a q) + 2 H_{2} O (l) \to H_{3} P O_{4} (a q) + 2 C u (s) + H_{2} S O_{4} (a q)

(c)

C_{6} H_{5} C H O (l) + 2 [A g (N H_{3})_{2}]^{+} (a q) + 3 O H^{-} (a q) \to C_{6} H_{5} C O O^{-} (a q)

+ 2 A g (s) + 4 N H_{3} (a q) + 2 H_{2} O (l)

(d)

C_{6} H_{5} C H O (l) + 2 C u^{2 +} (a q) + 5 O H^{-} (a q) \to

No Change observed.

Q. Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions :

P b_{(s)} + P b O_{2 (s)} + 2 H_{2} S O_{4 (a q)} \to 2 P b S O_{4 (s)} + 2 H_{2} O_{(l)}

Consider the reactions:
(a) $H_{3} P O_{2} (a q) + 4 A g N O_{3} (a q) + 2 H_{2} O (l) \to H_{3} P O_{4} (a q) + 4 A g (s) + 4 H N O_{3} (a q)$
(b) $H_{3} P O_{2} (a q) + 2 C u S O_{4} (a q) + 2 H_{2} O (l) \to H_{3} P O_{4} (a q) + 2 C u (s) + H_{2} S O_{4} (a q)$
(c) $C_{6} H_{5} C H O (l) + 2 [A g (N H_{3}) 2]^{+} (a q) + 3 O H^{-} (a q) \to C_{6} H_{5} C O O^{-} (a q) + 2 A g (s) + 4 N H_{3} (a q) + 2 H_{2} O (l)$
(d) $C_{6} H_{5} C H O (l) + 2 C u^{2 +} (a q) + 5 O H^{-} (a q) \to$ No change observed.
What inference do you draw about the behaviour of $A g^{+} a n d C u^{2 +}$ from these reactions?

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