Vooreerst:
\(dU = \left ( \frac{\partial U}{\partial T} \right )_V dT+ \left ( \frac{\partial U} {\partial V} \right )_T dV \)
en dan:The first term is the change in internal energy due to the temperature change alone, and the second term is the change in internal energy due to the volume change alone. Since the differential of the internal energy is by
\(dq-p_{ext}dV\)
, if only presure-volume work is involved , then \(dq= \left ( \frac{\partial U}{\partial T} \right )_V+ \left [ p_{ext}+ \left ( \frac{\partial U} {\partial V} \right )_T \right ] dV \)
Volgens mij moet in die laatste regel in plaats van \(dq\)
er een \(dU\)
staan. Klopt dat? of waarom zit ik fout?Groeten Dank bij voorbaat.
