Isothermal Expansion Calculator

Calculate Constant Temperature Process Parameters

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Isothermal Process Parameters Calculator

Calculate pressure, volume, and work changes for constant temperature processes.

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Work and Heat Transfer Calculator

Calculate work done and heat transfer for isothermal processes.

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Entropy Change Calculator

Calculate entropy changes for system and surroundings.

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Understanding Isothermal Processes

Basic Principles

Key concepts include:

  • Constant temperature
  • Boyle's law
  • Work done
  • Heat transfer
  • Internal energy

Applications

Common uses:

  • Gas compression
  • Phase changes
  • Heat engines
  • Industrial processes
  • Laboratory experiments

Advanced Concepts

Important considerations:

  • Reversibility
  • Entropy changes
  • Path dependence
  • Real gas behavior
  • System boundaries

Process Characteristics

Key features:

  • ΔU = 0
  • Q = W
  • PV = constant
  • Reversible work
  • Heat reservoir

Essential Isothermal Process Formulas

Basic Relations

P₁V₁ = P₂V₂

T = constant

ΔU = 0

Work and Heat

W = -nRT ln(V₂/V₁)

Q = -W

Q = nRT ln(V₂/V₁)

Entropy Changes

ΔS = nR ln(V₂/V₁)

ΔSsurr = -Q/T

ΔStotal = ΔS + ΔSsurr