In every electrolytic and galvanic (voltaic) cell the anode is that electrode
(A) at which oxidation occurs.
(B) which attracts cations.
(C) at which electrons are supplied to the solution.
(D) at which reduction occurs.
You KNOW this one.
I know that the electrons float over to the cataod SO i think it would be C
What is the definition of the anode? The anode is where _____________occurs.
is an electrode through which (positive) electric current flows into a polarized electrical device
NO, NO, NO. The definition of the anode is:
The anode is where oxidation occurs. It is NEVER the definition of the electrode that is positive ALTHOUGH, the anode IS positive in electrolytic cells but is negative in galvanic cells. But the definition of the anode being where oxidation occurs is correct all the time.
To determine which option is correct, we need to understand the process of oxidation and reduction in an electrolytic and galvanic cell.
In an electrolytic cell, electrical energy is used to drive a non-spontaneous chemical reaction. The reaction at the anode is always the oxidation reaction, where electrons are lost. During oxidation, positively charged ions (cations) are formed as a result. Therefore, option (A) "at which oxidation occurs" is correct for electrolytic cells.
In a galvanic cell (also known as a voltaic cell), a spontaneous chemical reaction produces electrical energy. The reaction at the anode is always the oxidation reaction, where electrons are lost. During oxidation, cations are formed and are attracted to the cathode. Therefore, option (B) "which attracts cations" is also correct for galvanic cells.
However, option (C) "at which electrons are supplied to the solution" is not true for either type of cell. In both electrolytic and galvanic cells, the electrons are supplied by the anode to the external circuit, not directly to the solution.
Option (D) "at which reduction occurs" is incorrect for both cell types. Reduction occurs at the cathode, not the anode.
So, the correct answer is (A) at which oxidation occurs for electrolytic cells, and (B) which attracts cations for galvanic cells.