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Which reactions are redox reactions?(a) Al(s) + 3 Ag+(aq) ? Al3+(aq) + 3 Ag(s)(b) 4

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 86P Chapter 7

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 86P

Which reactions are redox reactions?

(a) \(A l(s)+3 \mathrm{Ag}^{+}(a q) \rightarrow \mathrm{Al}^{3+}(a q)+3 \mathrm{Ag}(s)\)

(b) \(4 \mathrm{~K}(s)+\mathrm{O}_{2}(g) \rightarrow 2 \mathrm{~K}_{2} \mathrm{O}(s)\)

(c) \(\mathrm{SO}_{3}(g)+\mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{H}_{2} \mathrm{SO}_{4}(a q)\)

(d) \(\mathrm{Mg}(s)+\mathrm{Br}_{2}(l) \rightarrow \mathrm{MgBr}_{2}(s)\)

Equation Transcription:

Text Transcription:

Al(s) + 3 Ag^+ (aq) right arrow Al^3+ (aq) + 3 Ag(s)

4 K(s) + O_2 (g) right arrow 2 K_2 O(s)

SO_3 (g) + H_2 O(l) right arrow H_2 SO_4 (aq)

Mg(s) + Br_2 (l) right arrow MgBr_2 (s)

Step-by-Step Solution:

Problem 86P

PROBLEM 86P

         Which reactions are redox reactions?

(a) Al(s) + 3 Ag+(aq) ? Al3+(aq) + 3 Ag(s)

(b) 4 K(s)+ O2(g)?2 K2O(s)

(c) SO3(g) + H2O(l) ? H2SO4(aq)

(d) Mg(s) + Br2(l ) ? MgBr2(s)

                                                                   Step by step solution

Step 1 of 4

(a)

The given reaction is as follows.

                             

In the above reaction, electrons are transferred to  to .

Therefore, it is a redox reaction.

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Step 2 of 4

Chapter 7, Problem 86P is Solved
Step 3 of 4

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Which reactions are redox reactions?(a) Al(s) + 3 Ag+(aq) ? Al3+(aq) + 3 Ag(s)(b) 4