Ask questions and get helpful answers.

What change in entropy occurs when a 27.9-g ice cube at -12 C is transformed into steam at 115 C?

Add the entropy changes due to: (1) heating the ice to 0C, (2) melting the ice, (3) heatng the water from 0 to 100 C, and (4) Evaporating the liquid water. For (2) and (3), the entropy change is the heat transfered (the heat of fusion or vaporization) divided by the corresponding temperature. For (1) and (3), an integration must be performed, and the entropy change is Mass*C*ln (T2/T1), where T2 is the final temperature and T1 is the initial temperature

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

1 answer

  1. 0.5×27.9×ln(273÷261)+(80×27.9/273)+ln(388/273)+(540/388)=10.54cal/k

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.