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Question: Choose the correct option for free expansion of an ideal gas under adiabatic condition is A) 𝑞 = 0 , 𝑊 = 0 , Δ 𝑇 = 0 B) 𝑞 = 0 , 𝑊 = 0 , Δ 𝑇 ≠ 0 C) 𝑞 = 0 , 𝑊 = 0 , Δ 𝑇 < 0 D) 𝑞 = 0 , 𝑊 = 0 , Δ 𝑇 > 0.

By jschemistrytelugu@gmail.comPosted on January 3, 2026Posted in THERMODYNAMICSNo Comments

Solution :- Correct option : (1) In a free expansion, P_ext = 0 — (1) then,W = PΔV= 0 (ΔV) W = 0 — (2) Since, it is an adiabatic process, Heat is constant – q = 0 — (3) acc. to first law of thermodynamics, ΔU […]

Do you know the limitations of first law of thermodynamics

By jschemistrytelugu@gmail.comPosted on November 28, 2025Posted in THERMODYNAMICSNo Comments

First law of thermodynamics has some limitations. Before going to know about that, we need to remind what are the different forms of first law of thermodynamics. First law of thermodynamics is also known as law of conservation of energy. “Energy neither be created nor be destroyed, but it can be changed from one form […]

State Function and Path Function

By jschemistrytelugu@gmail.comPosted on October 25, 2025Posted in THERMODYNAMICSNo Comments

State Function and Path Function State Function State function is a thermodynamic property whose valuy depends only on the current state of the system (defined by variables like temperature, pressure, volume, composition, etc.) and not […]

SECOND LAW OF THERMODYNAMICS

By jschemistrytelugu@gmail.comPosted on October 25, 2025Posted in THERMODYNAMICSNo Comments

SECOND LAW OF THERMODYNAMICS The Second Law can be expressed in several equivalent ways… Direction of Heat Flow (Clausius Statement): Heat flows from hot body to cold body. Heat cannot spontaneously transfer from a colder body to a hotter body without external intervention. This establishes the natural direction of thermal energy transfer. Kelvin-Planck Statement: It […]