Hydrogen and fluorine react to form hydrogen fluoride, like this: H,(g)+D 2(g) 2
ID: 1027300 • Letter: H
Question
Hydrogen and fluorine react to form hydrogen fluoride, like this: H,(g)+D 2(g) 2 HF(g) The reaction is exothermic. Suppose a mixture of H, F2 and HF has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium O to the right O to the left O(none) The temperature is lowered. The pressure of F2 wil O to the right O to the left O(none) The temperature is raised.Explanation / Answer
1)
Decreasing Temperature will shift the reaction in a direction which release heat as per Le chatelier Principle
Forward reaction is exothermic in nature
hence, forward reaction will be favoured
So, Equilibrium moves to product side
The pressure of F2 will decrease as F2 is reactant
Answer:
decrease
to the right
2)
Increasing Temperature will shift the reaction in a direction which absorbs heat as per Le chatelier Principle
Forward reaction is exothermic in nature
hence, backward reaction will be favoured
So, Equilibrium moves to reactant side
The pressure of HF will decrease as HF is product
Answer:
decrease
to the left
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