Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 5 - Section 5.4 - Calorimetry - Checkpoint - Page 209: 5.4.2


d) Au$\lt$Fe$\lt$Al

Work Step by Step

Heat absorbed $q=sm\Delta T$ where s is the specific heat. Mass m and change in temperature $\Delta T$ are same for Al, Au and Fe. But, specific heats are different. $s_{Al}=0.900\,J/g\cdot \,^{\circ}C$ $s_{Au}=0.129\,J/g\cdot \,^{\circ}C$ $s_{Fe}=0.444\,J/g\cdot \,^{\circ}C$ Heat absorbed is more by metals with high specific heat. Therefore, metals can be arranged in order of increasing amount of heat absorbed as $Au\lt Fe\lt Al$
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