- #1

abi.ayan

- 37

- 0

**what volume does the "v" in pv denotes?**

say that in a system where pressure is constant Mg reacts with O

_{2}.when dealing with above reaction thermodynamically,

H

_{I}=U

_{I}+PV

_{I}

where H is the initial enthalpy of the system

U

_{I}is the initial internal energy of the system.

And my question is that what does the V

_{I}denotes in the equation.Is it the volume of magnesium and oxygen?

Likewise when we write the equation after the reaction, what does the V

_{F}denotes?Is it the volume of magnesium oxide formed ?

can anyone explain?