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Classify each half-reaction occurring in acidic aqueous so­lution as an oxidation or a

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

Solution for problem 64P 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 64P

Problem 64P

Classify each half-reaction occurring in acidic aqueous so­lution as an oxidation or a reduction and balance the half-reaction.

(a) S(s) → H2S(g)

(b) S2O82− (aq) → 2 SO42− (aq)

(c) Cr2O72− (aq) → Cr3+(aq)

(d) NO(g) → NO3− (aq)

Step-by-Step Solution:

Step 1

(a) S(s) → H2S(g)

S0 + 2e-  → H+12S-2   ( gained 2e- : reduction )

The balanced equation is,

S + 2H+  → H2S

Step 2 of 4

Chapter 16, Problem 64P is Solved
Step 3 of 4

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

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Classify each half-reaction occurring in acidic aqueous so­lution as an oxidation or a