If a state function G is defined such as G=H-TS, the dG must decrease for a spontaneous process (involving only PV work) occurring at_________.

constant volume and temperature

No worries! We‘ve got your back. Try BYJU‘S free classes today!

constant pressure and temperature

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

constant volume and pressure

No worries! We‘ve got your back. Try BYJU‘S free classes today!

constant entropy and volume.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A constant pressure and temperature
G=H-TS
For a spontaneous process (at constant T & P).
( dG < 0, as Tds>dU+pdV, Vdp=SdT=0 as temp. and pressure is constant)

Suggest Corrections

Similar questions

Q. For a spontaneous process, if entropy and volume are constant, the internal energy of the system must ________.

Q. Which of the following options is correct regarding spontaneity of a process occurring on a system in which only pressure-volume? work is involved and S, G, Cl, H, V, and P have usual meaning as in thermodynamics?

In an irreversible process taking place at constant T and P and in which only pressure-volume work is being done, the change in Gibbs free energy (dG) and change in entropy (dS), satisfy the criteria

P_{i}, V_{i}

are initial pressure and volume and

V_{f}

is the final volume of a gas in a thermodynamic process respectively. If

P V^{n} = C o n s t a n t

, then the amount of work done by gas:

(γ = C_{p} / C_{v})

. Assume same, initial state & same final volume in all processes

Q. In an irreversible process taking place at constant T and P and in which only pressure-volume work is being done the change in Gibbs free energy

(Δ G)

and change in entropy

(Δ S)

satisfy the criteria:

Join BYJU'S Learning Program

If a state function G is defined such as G=H-TS, the dG must decrease for a spontaneous process (involving only PV work) occurring at_________.

The correct option is A constant pressure and temperatureG=H-TS For a spontaneous process (at constant T & P).( dG < 0, as Tds>dU+pdV, Vdp=SdT=0 as temp. and pressure is constant)

The correct option is A constant pressure and temperature
G=H-TS
For a spontaneous process (at constant T & P).
( dG < 0, as Tds>dU+pdV, Vdp=SdT=0 as temp. and pressure is constant)