Suppose of water vaporizes isobarically at atmospheric pressure,

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

Suppose

1.0\,\text{g}

of water vaporizes isobarically at atmospheric pressure,

1.01\times10^5\,\text{Pa}

. Its volume in the liquid state is

V_i=V_{\text{liquid}}=1.0\,\text{cm}^3

and its volume in the vapour state is

V_f=V_{\text{vapour}}=1671\,\text{cm}^3

. Find the work done in the expansion and the change in internal energy of the system. Ignore mixing of the steam and surrounding air. Take the latent heat of vaporization as

L_v=2.26\times10^6\,\text{J kg}^{-1}

Related theory

Latent Heat
Phase Change
Internal Energy
Calorimetry and latent heat
The first law of thermodynamics
Thermodynamics
Heat internal energy and work

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