Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 7 - Section 7.8 - Energy in Chemical Reactions - Additional Questions and Problems - Page 249: 7.91f

Answer

Balanced equation: $2Fe(s) + 3H_2SO_4(aq) --\gt Fe_2(SO_4)_3(aq) + 3H_2(g)$ Reaction type: Single replacement.

Work Step by Step

$Fe(s) + H_2SO_4(aq) --\gt Fe_2(SO_4)_3(aq) + H_2(g)$ 1. Balance the number of sulfur atoms, by putting a "3" in front of $H_2SO_4$. $Fe(s) + 3H_2SO_4(aq) --\gt Fe_2(SO_4)_3(aq) + H_2(g)$ 2. Balance the number of iron atoms, by putting a "2" in front of $Fe$ $2Fe(s) + 3H_2SO_4(aq) --\gt Fe_2(SO_4)_3(aq) + H_2(g)$ 3. Balance the number of hydrogen atoms, by putting a "3" in front of $H_2$. $2Fe(s) + 3H_2SO_4(aq) --\gt Fe_2(SO_4)_3(aq) + 3H_2(g)$ 4. Classify the reaction. That reaction follows the pattern of a single replacement reaction (AB + C $--\gt$ CB + A). Where one compound/element replaces another in one compound.
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