Question

1. If a reactant is added to a reaction at equilibrium, which way will the reaction...

1. If a reactant is added to a reaction at equilibrium, which way will the reaction shift to re-establish equilibrium (use forward or backward)? Why?

2.For an endothermic reaction, if heat is added, which way will the reaction shift to re-establish equilibrium (use forward or backward)? Why?

3. A reaction has initial concentration of 0.230 M Fe3+ and 0.410 M SCN- At equilibrium, the concentration of FeSCN2+ is 0.150 M.

A) What is the concentration of the Fe3+ at equilibrium?

B) What is the concentration of the SCN- at equilibrium?

4. For the equilibrium in question 3, what is the value of the equilibrium constant?

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Homework Answers

Answer #1

1.

answer : forward side

according to Le Châtelier's principle , if the reactants are added to a reaction at equilibrium then the reactants concentration increases so the reacction shifts to less concentration side. so the reaction shifts to product side that is forward side

2)

answer : shifts forward side

for endothermic reaction increasing the temperature shifts the reaction towards forward direction .

for exothermic reaction increasing temperature shifts the reaction back ward direction.

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