Problem: Consider the sublimation of iodine at 25.0 ˚C: I2(s) → I2(g)Find ΔG˚rxn at 25.0 ˚C under the following nonstandard conditions:(ii) PI2 = 0.155 mmHg

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FREE Expert Solution

Reaction:  I2(s) → I2(g)


ΔG°rxn=ΔG°products-ΔG°reactantsΔG°rxn=19.30 kJmol-0


ΔG°rxn  19.30 kJ/mol


Recall that ΔGrxn and Q are related to each other:


ΔGrxn=ΔG°rxn+RTlnQ


Reaction Quotient, Q


Q=PproductsPreactants=PI2


**Solids and liquids are ignored in equilibrium expression


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Problem Details

Consider the sublimation of iodine at 25.0 ˚C: I2(s) → I2(g)

Find ΔG˚rxn at 25.0 ˚C under the following nonstandard conditions:
(ii) PI2 = 0.155 mmHg

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Based on our data, we think this problem is relevant for Professor Thavarajah's class at TORONTO.