a. The above reaction is allowed to reach equilibriumforming a yellow solution.

Question

a. The above reaction is allowed to reach equilibriumforming a yellow solution. What happens to the color if moreof A is added to the reaction mixture? Explain.

b. A reagent is added that removes some B from themixture. What happens to the yellow color of the solution?Explain.

c. What happens to the concentration of B in the solution ifsome of C is added to the equilibrium mixture? Explain.

d. When a dark yellow solution of A, B and C at equilibrium isheated, its color turns to pale yellow. Is this reactionendothermic or exothermic?

Explanation / Answer

A   +   B <-------> C

If A is added more to the reaction mixture which reachesequilibrium the yellow colour solution is intensified.

Since Lechartles principle , forward reaction takesplace.

(2).Yeloow colour turns to pale i.e., intensity is decrease.Ondecreaseing the concentration of reactant backward reaction takesplace.

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