Find the observed EMF of the cell Cd | Cd^{2+ | vedclass

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

Question

(B) The cell reaction is $Cd_{(s)} + Cu^{2+}(aq) \longrightarrow Cd^{2+}(aq) + Cu_{(s)}$.First,calculate the standard cell potential: $E^{\circ}_{cell

Vedclass · Accepted Answer

$0.15$

Vedclass · Answer

(B) The cell reaction is $Cd_{(s)} + Cu^{2+}(aq) \longrightarrow Cd^{2+}(aq) + Cu_{(s)}$.First,calculate the standard cell potential: $E^{\circ}_{cell} = E^{\circ}_{cathode} - E^{\circ}_{anode} = 0.35 \ V - (-0.40 \ V) = 0.75 \ V$.Using the Nernst equation: $E_{cell} = E^{\circ}_{cell} - \frac{0.0591}{n} \log Q$.Here,$Q = \frac{[Cd^{2+}]}{[Cu^{2+}]} = \frac{0.01}{0.01} = 1$.Since $\log(1) = 0$,$E_{cell} = 0.75 \ V$.The observed $EMF$ under load is given by $E_{observed} = E_{cell} - (I 	imes R)$.$E_{observed} = 0.75 \ V - (0.15 \ A 	imes 4 \ \Omega) = 0.75 \ V - 0.60 \ V = 0.15 \ V$.

Find the observed $EMF$ of the cell $Cd | Cd^{2+}(0.01 \ M) || Cu^{2+}(0.01 \ M) | Cu$ under conditions where the internal resistance is $4 \ \Omega$ and it is producing a current of $0.15 \ A$. (Given: $E^{\circ}_{Cu^{2+}/Cu} = 0.35 \ V$ and $E^{\circ}_{Cd^{2+}/Cd} = -0.4 \ V$) (in $V$)

Similar Questions

Calculate the equilibrium constant of the reaction:
$Cu_{(s)} + 2Ag^{+}_{(aq)} \rightarrow Cu^{2+}_{(aq)} + 2Ag_{(s)}$
Given $E^{\Theta}_{cell} = 0.46 \ V$

Considering the reaction $Cl_{2(g)} + 2Br^{-}_{(aq)} \rightarrow 2Cl^{-}_{(aq)} + Br_{2(l)}$,calculate the cell $emf$ in $V$ when $[Cl^{-}] = [Br_2] = [Br^{-}] = 0.01 \ M$ and $Cl_2$ gas is at $1 \ atm$ pressure. (Given $E^o = 0.29 \ V$ for the reaction)

Calculate the $EMF$ of the cell: $Cr | Cr^{+3}(0.1 \, M) || Fe^{+2}(0.01 \, M) | Fe$
(Given: $E^o_{Cr^{+3}|Cr} = -0.75 \, V$,$E^o_{Fe^{+2}|Fe} = -0.45 \, V$) (in $, V$)

Consider a Daniell cell operating under non-standard state conditions. Suppose that the cell's reaction is multiplied by $2$. Which of the following will double its initial value?

Which one of the following will increase the voltage of the cell? $(T = 298 \ K)$ :- $Sn_{(s)} + 2Ag_{(aq)}^{+} \rightarrow Sn_{(aq)}^{2+} + 2Ag_{(s)}$

Vedclass Test Series

Exam Paper Generator

Online Exam Module