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

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

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:

Solution 86P

Step 1:

First let’s see what is a redox reactions :

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. Redox is a chemical reaction which involves both a reduction process and a complementary oxidation process, in which the oxidation states of atoms are changed.

We identify the reaction if its redox by the change in oxidation numbers. If an atom’s oxidation number increases, it is an oxidation reaction and if  an atom’s oxidation number decreases, then it is a reduction reaction.

Step 2 of 2

Chapter 7, Problem 86P is Solved
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)

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