Question

2. When is equilibrium established in a reversible reaction? 3. How does a system at equibbeium respond to the addition of more reactant? 4. How does a system at equilibrium respond to the addition of more peoducr? 5. In Part C, we look at the following reaction Fe (ag)+SCN (ag) FeSCN (ag) Copyright C 2014 Peanon Edction, Inc 207 Laboratory Mansal for Genenal Orgonic, and Bological Chemny 208 a Write the equilibriam constant expression for the reaction if the equilibrium constant is 78 b. Does the equilibeium misture contain more products or reactants?

Answer 1

2. chemically equilibrium in a reversible reaction is the state at which both forward and backward reactions or two opposing reactions occur at the same speed

3. According to Le Chatelier's principle in general, an increase in the concentration of reactants, shifts the equilibrium to the forward direction.

4.According to Le Chatelier's principle in general, an increase in the concentration of products, shifts the equilibrium to the backward direction.

5. The given equilibrium reaction is

      Fe3+ (aq) + SCN-(aq) <------> FeSCN2+(aq)

a). the expression for equilibrium constant, Keq = [FeSCN2+]/[Fe2+] [SCN-] = 78

b). since Keq > 1, the reaction mixture contains more products.