Question

Following reactions are taking place in a Galvanic cell, $Zn \to Zn^{2+}+2e^{-}; Ag^{+}+e^{-} \to Ag$ Which of the given representations is the correct method of depicting the cell?

• A. $Zn_{\left(s\right)} \left|Zn^{2+}_{\left(aq\right)}\right|\left|Ag^{+}_{\left(aq\right)}\right|Ag_{\left(s\right)}$
• B. $Zn^{2+}\left|Zn\right| \left|Ag\right|Ag^{+}$
• C. $Zn_{\left(aq\right)} \left|Zn^{2+}_{\left(s\right)}\right|\left|Ag^{+}_{\left(s\right)}\right|Ag_{\left(aq\right)}$
• D. $Zn_{\left(s\right)} \left|Ag^{+}_{\left(aq\right)}\right|\left|Zn^{2+}_{\left(aq\right)}\right|Ag_{\left(s\right)}$

Answer 1

Answer: (A)

$Zn_{\left(s\right)} \left|Zn^{2+}_{\left(aq\right)}\right|\left|Ag^{+}_{\left(aq\right)}\right|Ag_{\left(s\right)}$

Answer 2

$Zn+2Ag^{+} \to Zn^{2+}+2Ag$ can be represented as $Zn_{\left(s\right)}\left|Zn^{2+}_{\left(aq\right)}\right|\left|Ag^{+}_{\left(aq\right)}\right|Ag_{\left(s\right)}$