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Which substance is oxidized in each reaction?(a) 2 H2(g) + O2(g) ? 2 H2O(l)(b) 4 Al(s) +

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

Solution for problem 33P Chapter 16

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 33P

Problem 33P

Which substance is oxidized in each reaction?

(a) 2 H2(g) + O2(g) → 2 H2O(l)

(b) 4 Al(s) + 3 O2(g) → 2 Al2O3(s)

(c) 2 Al(s) + 3 Cl2(g) → 2 AlCl3(s)

Step-by-Step Solution:
Step 1 of 3

Solution: Here, we are going to identify the substance that is oxidized in the given reactions.

Step1:

The term “oxidation” is defined as the addition of oxygen/electronegative element to a substance or removal of hydrogen/ electropositive element from a substance. The substance which undergoes oxidation are said to be oxidized.

Whereas the term “reduction” is defined as removal of oxygen/electronegative element from a substance or addition of hydrogen/ electropositive element to a substance.

Step2:

  1. In the first reaction, hydrogen adds up oxygen and hence undergoes oxidation. Thus, H2 is oxidized.
  2. In the second reaction, aluminium adds up oxygen and hence undergoes oxidation. Thus, Al is oxidized.
  3. In the third reaction, aluminium adds up the electronegative chlorine atom and hence undergoes oxidation. Thus, Al is oxidized.

                                                -------------------------

Step 2 of 3

Chapter 16, Problem 33P is Solved
Step 3 of 3

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

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Which substance is oxidized in each reaction?(a) 2 H2(g) + O2(g) ? 2 H2O(l)(b) 4 Al(s) +