For a Mg|Mg^{2+}_{(aq)}||Ag^{+}_{(aq)}|Ag cel | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The cell reaction for $Mg|Mg^{2+}_{(aq)}||Ag^{+}_{(aq)}|Ag$ is $:$ $Mg_{(s)} + 2Ag^{+}_{(aq)} \rightarrow Mg^{2+}_{(aq)} + 2Ag_{(s)}$ Here,the num

Vedclass · Accepted Answer

$E_{	ext{cell}} = E_{	ext{cell}}^{o} - \frac{RT}{2F} \ln \frac{[Mg^{2+}]}{[Ag^{+}]^2}$

Vedclass · Answer

(A) The cell reaction for $Mg|Mg^{2+}_{(aq)}||Ag^{+}_{(aq)}|Ag$ is $:$ $Mg_{(s)} + 2Ag^{+}_{(aq)} ightarrow Mg^{2+}_{(aq)} + 2Ag_{(s)}$ Here,the number of electrons transferred $n = 2$. The reaction quotient $Q$ is given by $Q = \frac{[Mg^{2+}]}{[Ag^{+}]^2}$. According to the Nernst equation $:$ $E_{	ext{cell}} = E_{	ext{cell}}^{o} - \frac{RT}{nF} \ln Q$ Substituting the values $:$ $E_{	ext{cell}} = E_{	ext{cell}}^{o} - \frac{RT}{2F} \ln \frac{[Mg^{2+}]}{[Ag^{+}]^2}$ Thus,the correct option is $A$.

For a $Mg|Mg^{2+}_{(aq)}||Ag^{+}_{(aq)}|Ag$ cell,the correct Nernst Equation is $:$

Similar Questions

In acidic medium,$MnO_4^-$ acts as an oxidising agent: $MnO_4^- + 8H^+ + 5e^- \to Mn^{2+} + 4H_2O$. If the $H^+$ ion concentration is doubled,the electrode potential of the half-cell will:

Derive an equation for the equilibrium constant $K_C$ of any galvanic cell (redox reaction) and also state its uses.

Consider the following electrodes $P = Zn^{2+}(0.0001 \ M) / Zn$,$Q = Zn^{2+}(0.1 \ M) / Zn$,$R = Zn^{2+}(0.01 \ M) / Zn$,$S = Zn^{2+}(0.001 \ M) / Zn$. Given $E^{\circ}(Zn^{2+} / Zn) = -0.76 \ V$,the electrode potentials of the above electrodes in volts are in the order:

The value of the reaction quotient $(Q)$ for the cell $Zn_{(s)} | Zn^{2+}(0.01 \ M) || Cu^{2+}(1.25 \ M) | Cu_{(s)}$ is:

For the cell at $298 \ K$:
$Ag_{(s)} | AgBr_{(s)} | Br^{-}(0.01 \ M) || I^{-}(0.02 \ M) | AgI_{(s)} | Ag_{(s)}$
The correct information is:
[Given: $K_{sp}(AgBr) = 4 \times 10^{-13}$,$K_{sp}(AgI) = 8 \times 10^{-17}$,$\frac{2.303 \ RT}{F} = 0.06 \ V$,$\log 2 = 0.3$]

Vedclass Test Series

Exam Paper Generator

Online Exam Module