Thermal Processes and Pressure
8 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the enthalpy (H) defined as in the context of thermodynamics?

H = U + pV

In the context of chemistry, why is enthalpy (H) important?

It describes reactions in an open container.

What is the relationship between enthalpy (H) and heat capacity (Cp) for isobaric processes?

dH = CpdT

For the perfect gas, what is the expected change of temperature (T) during chemical reactions?

<p>No change of T is expected (ΔrT ≈ 0)</p> Signup and view all the answers

What is an exception to the usual positive value of heat capacity?

<p>Metastable systems, e.g. clusters and black holes</p> Signup and view all the answers

According to Dulong and Petit (1819), what is the approximate molar heat capacity of solid metals at high temperatures?

<p>3R or 24.9 J/K</p> Signup and view all the answers

What causes strong deviations in heat capacity at low temperatures for solids?

<p>T^3-law of Debye or linear T-dependence (electrons in metals)</p> Signup and view all the answers

Why do solids of light, tightly-bonded atoms such as beryllium and diamond have smaller heat capacities?

<p>Large quantum vibrational energy spacing, causing many vibrational modes to be frozen out</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser