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At 300 K, ozone is 50% dissociated. Standard free energy change at this temperature and 1 atm pressure is (Nearest integer).
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Question

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At 300 K, ozone is 50% dissociated. Standard free energy change at this temperature and 1 atm pressure is  (Nearest integer).
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Canvas Classes · Accepted Answer

Strategy:
 Set up an ICE table for the dissociation of ozone. Relate the equilibrium partial pressures to the equilibrium constant , and then find .

Step 1: ICE Table (molar basis)
Reaction: 
Initial:  moles 
Change (50%):  mole  moles .
Equilibrium:  mole  moles .
Total moles .

Step 2: Partial Pressures at 1 atm

Step 3: Calculate 
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