Question

An electrochemical cell converts _________energy to ________energy.
A.Chemical
B.Increases
C.Electrical
D.Ions

Answer 1

Hint: An electrochemical cell is a device that is capable of either generating electrical energy from chemical reactions or by using electrical energy to cause chemical reactions. Thus, an electrochemical cell converts chemical energy to electrical energy.

Complete answer:
Electrochemical cells can generate electrical energy from chemical reactions. It is of two types. Galvanic cells and electrolytic cells. Galvanic cells are also known as voltaic cells. Galvanic cells are involved in redox reactions whereas electrolytic cells do not involve non-spontaneous reactions. Electrolytic cells require an external source like a DC battery or an AC power source.
The redox reactions are the reactions in which both the reduction and oxidation reactions are done. The reduction can be defined as a lone pair of electrons and the oxidation can be defined as loss of electrons. Thus, in a given chemical reaction one compound can undergo reduction and the other compound can undergo oxidation.
An electrochemical cell gives unstable voltage, unstable current and low power are the disadvantages. The material can also not be recycled. The advantages are low cost and non-toxic substances.
Thus, an electrochemical cell converts chemical energy to electrical energy.
Both the options A and C are correct.

Note:
Though these two cells differ in the chemical reaction occurrence, both involve reduction and oxidation reactions. The electrons flow from the anode to cathode. Anode is a positive electrode and cathode is a negative electrode.