Question

Which of the following statement is incorrect about electrochemical cell?

• A. Electrons are released at anode
• B. Chemical energy is converted into electrical energy
• C. Salt bridge maintains the electrical neutrality of the electrolytes
• D. Cell can work indefinitely

Answer 1

The correct option is D Cell can work indefinitely

An electrochemical cell is a device which is used to convert chemical energy into electrical energy.
At the anode, oxidation takes place. So, electrons are released at anode.
The main function of a salt bridge is to help maintain the electrical neutrality within the internal circuit.
Cell cannot work indefinitely because when the material at anode does not have electrons to loose, the reaction stops and cell stops working.