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Which balanced equation represents a phase equilibrium?

(1) H2(g) + I2(g)<==> 2HI(g)
(2) 2NO2(g) <==> N2O4(g)
(3) Cl2(g) <==> Cl2(l)
(4) 3O2(g)<==> 2O3(g)

User Leroi
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1 Answer

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(3) Cl2(g) <==> Cl2(l), because it has an equilibrium between the two phases of liquid and gas.
User Will Ryan
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