Question

A voltaic cell is represented as :

$A\left(s\right)A^{2+}\left(aq\right)||B^{2+}\left(aq\right)|B\left(s\right)$

Which of the following statements is false regarding the above cell ?

• A.
  The double vertical line indicates salt bridge
• B. A is called the anode and B is called the cathode
• C.
  The cell reactions are represented as $A^{2+}\left(aq\right)+2e^{-}\to A\left(s\right)andB\left(s\right)\to B^{2+}\left(aq\right)+2e^{-}$
• D.
  None of the above

Answer 1

The correct option is C

The cell reactions are represented as $A^{2+}\left(aq\right)+2e^{-}\to A\left(s\right)andB\left(s\right)\to B^{2+}\left(aq\right)+2e^{-}$
$A\left(s\right)A^{2+}\left(aq\right)||B^{2+}\left(aq\right)|B\left(s\right)$

The vertical lines || indicate the salt bridge.

A (left side) is at anode so it undergoes oxidation, and it will be represented as an oxidation half reaction, whereas B (right side ) is at cathode so it is represented by reduction half reaction.

The cell reactions are represented as

$A\left(s\right)\to A^{2+}\left(aq\right)+2e^{-}and{B}^{2+}\left(aq\right)+2e^{-}\to B\left(s\right)$