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: 7.91b

Answer

Balanced equation: $C_4H_8(g) + 6O_2(g) --\gt 4CO_2(g) + 4H_2O(g)$ Reaction type: Combustion.

Work Step by Step

1. Count the atoms of each element in both sides of the reaction. $C_4H_8(g) + O_2(g) --\gt CO_2(g) + H_2O(g)$ Reactants: $C = 4$, $H = 8$ and $O = 2$ Products: $C = 1$, $H = 2$ and $O = 3$ 2. Balance the number of carbons, by putting a "4" in front of $CO_2$. $C_4H_8(g) + O_2(g) --\gt 4CO_2(g) + H_2O(g)$ 3. Balance the number of hydrogens, by putting a "4" in front of $H_2O$ $C_4H_8(g) + O_2(g) --\gt 4CO_2(g) + 4H_2O(g)$ 4. There is a total of 12 oxygens on the products side. Put a "6" in front of $O_2$ to balance that element. $C_4H_8(g) + 6O_2(g) --\gt 4CO_2(g) + 4H_2O(g)$ 5. Classify the reaction. That reaction follows the pattern of a combustion. Where a carbon-containing compound reacts with oxygen gas, to produce carbon dioxide and water.
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