Register to reply

Molar heat capacity in metals and ionic solids

by indie452
Tags: capacity, heat, ionic, metals, molar, solids
Share this thread:
indie452
#1
Apr4-12, 05:24 AM
P: 124
I am doing my revision and noticed that metals all have a molar heat capacity ~25 J/mol/K = 3R. Ionic solids such as NaCl and CaF2 however have different molar heat capacities. (~51 and 72 respectively)

Why is this? there is no explination that my lecturer gave and I cant find it online but it seems like it probably comes from the basic physics.

I know that the observed values of c are not the theorised ones so not exactly 3R. But the values above are at room temp and so should just be the Dulong-Petit law.

So why are they different and is there a way to calculate what it could be via equation? Is it to do with the bonds producing different degrees of freedom?

any hints/help would be appreciated
Phys.Org News Partner Science news on Phys.org
Bees able to spot which flowers offer best rewards before landing
Classic Lewis Carroll character inspires new ecological model
When cooperation counts: Researchers find sperm benefit from grouping together in mice

Register to reply

Related Discussions
Heat integral and molar heat capacity? Classical Physics 3
Molar heat capacity (Thermodynamics) Introductory Physics Homework 6
Molar heat capacity Classical Physics 0
Molar heat capacity Introductory Physics Homework 3
Molar heat capacity Introductory Physics Homework 0