Concept explainers
Interpretation:
The amount of heat required to raise the temperature of an alloy from
Concept introduction:
The amount of energy required to change the state of a substance is known as enthalpy. It is the different in the energy of final and initial state of a substance. The negative and positive sign of enthalpy indicates the energy released and energy absorbed, respectively, during the phase change.
Answer to Problem 97E
The amount of heat required to raise the temperature of an alloy from
Explanation of Solution
The amount of heat required to raise the temperature of an alloy from
Where,
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•
•
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The specific heat of an alloy (solid) is
Substitute the mass, final, initial temperature and specific heat of an alloy in equation (1).
The amount of energy required for phase transformation is calculated by the formula shown below.
Where,
•
The heat of fusion of an alloy is
Substitute the mass and heat of fusion in equation (2).
The amount of heat required to raise the temperature of an alloy from
Where,
•
•
•
•
The specific heat of an alloy (liquid) is
Substitute the mass, final, initial temperature and specific heat of an alloy in equation (3).
The total amount of energy sample gained when temperature is changed from
Convert
The amount of heat required to raise the temperature of an alloy from
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Chapter 15 Solutions
Introductory Chemistry: An Active Learning Approach