Chemistry - Thermodynamics - I Question with Solution | TestHub

(P) $\mathrm{T}=$ constant $\Rightarrow \Delta \mathrm{T}=0\Rightarrow \mathrm{DH}=\Delta \mathrm{U}=0$

(Q) $\mathrm{q}=0,\mathrm{H}=\mathrm{U}+\mathrm{PV}$

$\mathrm{dH}=\mathrm{dU}+\mathrm{PdV}+\mathrm{VdP}$

or, $\mathrm{dH}=\mathrm{dq}+\mathrm{dW}+\mathrm{PdV}+\mathrm{VdP}$

or, $\mathrm{dH}=\mathrm{VdP}$

(R) In cyclic process, change in state function $=0$.

(S) In isochoric process, $\mathrm{V}=$ constant $\Rightarrow \mathrm{dV}=0$

$$\Rightarrow \mathrm{W}=0$$