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I How can heat change if temp is constant?

  1. Mar 5, 2016 #1
    In my textbook it says an isothermal process occurs when the temperature is constant. It also said taht typically, Q,W, and delta U are not 0 in these processes. My question is how can heat not be 0 if temperature is constant?

    Q=mcDeltaT so if Delta T is 0, then Q also has to be 0 right?
     
  2. jcsd
  3. Mar 5, 2016 #2

    Simon Bridge

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  4. Mar 5, 2016 #3
    When work is done, this equation does not necessarily give the correct result. For isothermal expansion of an ideal gas, Q = W.
     
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