Ask Question
12 May, 17:22

A system does 213 J of work on its environment and gains 77.8 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment.

+2
Answers (1)
  1. 12 May, 20:29
    0
    a) Change in internal energy of the system = - 135.2 J

    b) Change in internal energy of the environment = 135.2 J

    Explanation:

    From the mathematical statement of the first law of thermodynamics,

    ΔU = Q - W

    ΔU = Change in internal energy of the system = ?

    Q = heat transferred into or out of the system. For this system, heat is transferred into it, Q = 77.8 J

    W = workdone = 213 J (positive because work is done by the system on the environment)

    ΔU = 77.8 - 213 = - 135.2 J

    The change in internal energy of the environment is just the negative of that of the system. The balance is always so.

    Hence, change in internal energy of the environment = - ( - 135.2) = 135.2 J
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A system does 213 J of work on its environment and gains 77.8 J of heat in the process. Find the change in the internal energy of (a) the ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers