In electrochemical cells, .
What do the half-reactions in an electrochemical cell represent?
Given the following equation describing a voltaic cell, describe the path of electron flow in the cell. Mg + Zn2+ -> Mg2+ + Zn (Eo=+1.61V)
The following equation shows the net reaction taking place in a voltaic cell. Identify the substance that is oxidized and the substance that is reduced.
Zn + Br2 -> Zn2+ + 2Br- (Eo = +1.85V)
Which of the following equations represents the decomposition of a chemical compound via an electrolytic reaction?
An anion is a negative ion, as it contains more electrons than protons.
Cell
In an electrolytic cell, electric energy is used to cause a chemical reaction. In a voltaic cell, a chemical reaction is used to convert chemical energy into electrical energy.
An ion is a charged atom or group of atoms formed by the addition or removal of one or more electrons. For example, when a sodium atom donates an electron, its net charge becomes , and it forms a sodium ion. Similarly, when a chlorine atom gains an electron, its net charge becomes , and it forms chloride ion.
Two half-cells connected using a salt bridge make a voltaic cell. Oxidation takes place in one half-cell and reduction in the other. This oxidation-reduction reaction triggers the flow of
A
This is an example of a(n) cell.
In your lab, you didn't use a salt bridge with metallic salt solutions. What did you use?
In your lab, the electrons were flowing from the .