Todays tutorial covers How to Solve Specific Heat Capacity Calculations to prepare you for your Second Class 2A2 exam.
The tutorial explains the concept of specific heat capacity and includes several practice problems including a Free PDF Download of how to use the formula, find the specific heat and how to use specific heat in calculations to show you step by step how to solve specific heat capacity problems.
How to Solve Specific Heat Capacity: Menu
- What is Specific Heat Capacity?
- Specific Heat Capacity Formula:
- Specific Heat Capacity Formula Variables:
- Video Tutorial of How to Solve Specific Heat Capacity Calculations:
- Free PDF Download of How to Solve Specific Heat Capacity Calculations with Practice Problems:
- How to Solve Specific Heat Capacity Calculations Summary:
Specific heat of a substance is defined as the amount of heat required to raise the temperature of one kilogram of substance by one degree Kelvin (or one degree Celsius).
Note: Specific heat capacity of a substance is commonly referred to as simply the specific heat of the substance.
From the above definition of specific heat we can conclude that the quantity of heat energy transferred to the substance is dependent upon the product of the following:
- The mass of the substance.
- The specific heat of the substance.
- The temperature change of the substance.
The specific heat capacity formula is commonly written in the following two ways:
Q = is the quantity of heat added or removed. If it is greater then zero heat is added, if it is less then zero heat has been removed. The quantity of heat added or removed is typically expressed in kilojoules “kJ”
m = is the mass of the substance. Typically expressed in kilograms “kg”
c = is the specific heat of the substance. Typically expressed in kilojoules per kilogram per kelvin “kJ/kGK” or kilojoules per kilogram per °C “kj/kg°C”
ΔT = is the change in temperature. Typically in Kelvin or degrees Celsius for temperature.
T1 = The initial temperature of the substance. Typically in Kelvin or degrees Celsius for temperature.
T2 = The final temperature of the substance. Typically in Kelvin or degrees Celsius for temperature.
Important note: Commonly practice problems will illustrate ΔT or (T1 & T2) in degrees Celsius or Kelvin. Although the numerical values for a temperature given in Kelvin or degrees Celsius are different, ΔK or Δ°C for the two given temperatures will be the same. For example:
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