Total vs. Partial derivatives in kinetics

I've recently seen partial derivatives in the velocity definition but in most cases is with total derivatives (infinitesimal change of concentration over infinitesimal change of time).
Maybe is more accurate to use partial derivatives because it shows that is only differentiation with respect time and not the other variables (which ones?).
Is this even remarkable or is just some change of notation?


[![Figure that shows how partial derivatives are used in CINÉTICA QUÍMICA, A. G. UREÑA, Ed. Síntesis, 2005](https://i.stack.imgur.com/TbChv.jpg)](https://i.stack.imgur.com/TbChv.jpg)




If we consider the ideal gas state equation as an example, in the form $V=f(n,p,T)$, then we use a partial derivative $\left(\frac{\partial V}{\partial T}\right)\_{n,p}$.


But if we use it in a closed, isobaric scenario as $V=f(T)$, with $n, p$ implicitly constant, then we can use normal/total derivative $\left(\frac{\mathrm{d} V}{\mathrm{d} T}\right)$


The distinguishing of both cases is kind of formal, depending on if you formally consider the other independent variables explicitly or not.


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