Answer to Question #260641 in Civil and Environmental Engineering for angel

Question

a. Write the balanced equation for the reaction of zinc and HCl. b. Write the equilibrium expression for the reaction of zinc and HCl. Keq = c. Should the equilibrium expression change if the size of the pieces changes? Why or not? d. Should the reaction rate change if the size of the Zn pieces changes? Why or why not? e. When the concentration of HCl is increased, what happens to the reaction rate? Is this what you expected? Why or why not?

Answer 1

Electrochemistry is that area of chemistry that deals with the relations between chemical changes and electrical energy. It is primarily concerned with oxidation- reduction phenomena. Chemical reactions can be used to produce electrical energy in cells that are referred to as voltaic, or galvanic, cells. Electrical energy, on the other hand, can be used to bring about chemical changes in what are termed electrolytic cells. In this experiment you will investigate some of the properties of voltaic cells.