Discussion :: Chemical Engineering Thermodynamics
- In case of the decomposition of hydroiodic acid (2HI ⇋ H₂ + I₂), addition of H₂ (at equilibrium condition) will
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A.
Increase the partial pressure of I₂ |
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B.
Decrease the partial pressure of HI |
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C.
Diminish the degree of dissociation of HI |
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D.
None of these |
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Answer : Option C
Explanation :
Lechalters principle: Actually for an equilibrium reaction on increasing the reactant concentration the equilibrium shifts towards the right and therefore the reactants gets more dissociated and products concentration increases but here we are increasing the product (H2) concentration so the equilibrium shifts towards left and increases the formation of 2HI there by decreasing the dissociation of HI.
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