Identify which half-reactions occur at the anode and cathode.
O2 + 2H2O + 4e + 40H-
Cd2+ + 2e → Cd
The O2 reaction occurs at the
C, and
the Cd2+ reaction occurs at the
Sn2+ + 2e → Sn
Mn2+ + 2e → Mn
The Sn reaction occurs at the
, and

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

the answer is na (sodium)