Heat Capacity v Specific heat capacity?

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SUMMARY

Heat capacity and specific heat capacity are distinct thermodynamic concepts. Heat capacity (C) refers to the amount of heat required to change the temperature of an arbitrary amount of a substance, while specific heat capacity (c) is the heat required per unit mass of a material, making it independent of the quantity of the substance. Additionally, molar heat capacity (Cmol) is defined as the heat required for one mole of the substance. The notation differentiates these concepts, with specific heat capacity denoted as lowercase 'c' and both heat capacity and molar heat capacity as uppercase 'C'.

PREREQUISITES
  • Understanding of thermodynamic principles
  • Familiarity with heat transfer equations
  • Knowledge of units of measurement in physics
  • Basic grasp of material properties
NEXT STEPS
  • Research the formula for calculating molar heat capacity (Cmol)
  • Explore applications of specific heat capacity in engineering
  • Study the relationship between heat capacity and temperature changes
  • Investigate the impact of material composition on specific heat capacity
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Students in physics or engineering, educators teaching thermodynamics, and professionals involved in material science or thermal management.

nafo man
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Homework Statement


what is the different in term of definition between Heat capacity and Specific heat capacity ?


Homework Equations




Q=mΔTC →C=Q/mΔT

The Attempt at a Solution


Specific heat capacity is the amount needed per unit mass of material so is a number independent of the amount of material but Heat capacity deals with an arbitrary amount of material
is this the only different?
 
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Hi nafo man! :smile:

You have it right!

Beyond that you have the molar heat capacity Cmol (amount needed for 1 mol of the material).
Usually the specific heat capacity is denoted with a lowercase c as opposed to the regular heat capacity and the molar heat capacity that are both denoted with an uppercase C.

So: Q = C ΔT = m c ΔT = n Cmol ΔT.
 
Last edited:

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