Concept explainers
Interpretation: The amount of energy required to heat 150 g of the given substances by 112°C needs to be determined.
Concept Introduction: Specific heat capacity can be defined as the heat in joules that is required to raise the temperature of 1 g of substance by 1°C. The relation between specific heat capacity and heat required is shown below:
Answer to Problem 57A
Substance | Heat required |
Water | |
Ice | |
Steam | |
Aluminium | |
Iron | |
Mercury | |
Carbon | |
Silver | |
Gold | |
Copper |
Explanation of Solution
Temperature change = 112°C
Mass = 150 g
- Specific heat capacity for water = 4.184 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for ice = 2.03 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for steam = 2 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for Aluminium = 0.89 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for iron = 0.45 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for liquid mercury = 0.14 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for carbon = 0.71 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for Silver = 0.24 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for Gold = 0.13 J/g°C Substitute the values to calculate heat required:
- Specific heat capacity for copper = 0.385 J/g°C Substitute the values to calculate heat required:
Thus,
Substance | Heat required |
Water | |
Ice | |
Steam | |
Aluminium | |
Iron | |
Mercury | |
Carbon | |
Silver | |
Gold | |
Copper |
Chapter 10 Solutions
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