Question
Download Solution PDFArrange the following elements in ascending order according to its molar specific heat?
(a) Carbon
(b) Silver
(c) Lead
(d) Aluminium
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is (a), (d), (b) & (c).
Key Points
- The molar specific heat capacity of an element is the amount of heat required to raise the temperature of 1 mole of the substance by 1 degree Celsius.
- Carbon (Graphite) has a molar specific heat capacity of approximately 8.53 J/mol·K.
- Aluminium has a molar specific heat capacity of about 24.20 J/mol·K.
- Silver has a molar specific heat capacity of around 25.35 J/mol·K.
- Lead has a molar specific heat capacity of approximately 26.65 J/mol·K.
Additional Information
- Molar Specific Heat Capacity
- The molar specific heat capacity is an intrinsic property of a substance that indicates how much heat is required to change the temperature of one mole of the substance by 1°C.
- It is typically measured in units of Joules per mole per Kelvin (J/mol·K).
- Heat Capacity vs. Specific Heat Capacity
- Heat capacity refers to the total amount of heat needed to change the temperature of a substance, irrespective of its amount or mass.
- Specific heat capacity is the heat required to change the temperature of a unit mass of the substance by 1°C.
- Molar specific heat capacity is specific to one mole of a substance.
- Factors Affecting Specific Heat Capacity
- The specific heat capacity of a substance is influenced by its molecular structure and the type of bonding between its atoms.
- For solids, the lattice structure and the types of atoms in the lattice significantly affect the specific heat capacity.
- Applications of Specific Heat Capacity
- Understanding specific heat capacity is crucial in various fields such as chemistry, physics, and engineering.
- It helps in designing thermal systems like heat exchangers, and in materials science for selecting materials based on thermal properties.
Last updated on Dec 9, 2024
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