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lowerlowerhk
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Homework Statement
A mixture of 1.773kg of water and 227g of ice is in an initial equilibrium state at 273K, in a reversible process, brought to a second equilibrium state where the water-ice ratio,by mass, is 1:1 at 273K. Calculate the entropy change of the system during the process.
Homework Equations
[tex]E=mL[/tex]
[tex]\Delta S=\int\limits_{i}^{f}\frac{dQ}{T}[/tex]
specific heat of fusion of water = 333000J/kgK
The Attempt at a Solution
Since final mass ratio is 1:1 the final mass is both ice and water is
m=(1.733+0.277)/2=1.025kg, which means 0.748 kg of water is turned to ice. Some water gives away energy and freezes to ice.
[tex]\Delta E=-0.748(333000)=-249084J[/tex]
[tex]\Delta S=-249084/273=-912J/K[/tex]
But that is not the answer.
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