Question

Pleaaase argent !!! Explain ur answers

Consider the following reaction:

Fe3+(aq) + SCN-(aq) ↔︎ [Fe(SCN)]2-(aq)

1)Explain what is meant by the term dynamic equilibrium.

2)Write the equilibrium expression for the reaction.

3) The numerical value of Kc at 298K is about 1000 for the reaction. What does this tell you about the position of the equilibrium at 298K?

Answer 1

Answer:

1. Dynamic equilibrium is a equilibrium in which the rate of forward direction is equal to the rate of backward direction. It is represented by a right left arrow.

2) Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$  

For the given chemical reaction:

$Fe^{3+}(aq)+SCN^-(aq)\rightleftharpoons [Fe(SCN)]^{2-}(aq)$

The expression for $K_c$ is written as:

$K_c=\frac{[[Fe(SCN)]^{2-}]}{[Fe^{3+}][SCN^-]}$

3) The value of $K_c$ is 1000 , which means the products are more favoured as compared to reactants and that the equilibrium lies more towards product side.