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Question
For the reaction \[\ce{H2 (g) + I2 (g) ⇌ 2HI (g)}\], the standard free energy is ∆GΘ > 0. The equilibrium constant (K ) would be ______.
Options
K = 0
K > 1
K = 1
K < 1
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Solution
For the reaction \[\ce{H2 (g) + I2 (g) ⇌ 2HI (g)}\], the standard free energy is ∆GΘ > 0. The equilibrium constant (K ) would be K < 1.
Explanation:
The given chemical reaction is \[\ce{H2 (g) + I2 (g) ⇌ 2HI (g)}\]
By, thermodynamical equation of equilibrium,
∆GΘ = – RT ln K > 0
⇒ – RT ln K > 0
Now, R > 0 and T > 0
⇒ − ln K > 0
⇒ K < 1
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