MCQ
Which of the following relation represents correct relation between standard electrode potential and equilibrium constant ?

$I$.  $\log \,\,K\, = \,\frac{{nF{E^o}}}{{2.303\,RT}}$

$II$.  $K\, = \,{e^{\frac{{nF{E^o}}}{{RT}}}}$

$III$.  $\log \,\,K\, = -\,\frac{{nF{E^o}}}{{2.303\,RT}}$

$IV$.  $\log \,\,K\, = 0.4342\,\,\frac{{-nF{E^o}}}{{RT}}$

Choose the correct statement $(s)$.

  • A
    $I,\, II$ and $III$ are correct
  • B
    $II$ and $III$ are correct
  • $I,\, II$ and $IV$ are correct
  • D
    $I$ and $IV$ are correct

Answer

Correct option: C.
$I,\, II$ and $IV$ are correct
c
$\Delta G\, = \, - \,2.303\,RT\,\log \,K$

$ - \,nF{E^o}\, = \, - \,2.303\,RT\,\log \,K$

$\log \,K\, = \,\frac{{nF{E^o}}}{{2.303\,RT}}$

$ = \,0.4342\,\frac{{nF{E^o}}}{{RT}}$     .....   $(i)$

$\ln \,K\, = \,\frac{{nF{E^o}}}{{RT}}$

$K\, = \,{e^{\frac{{nF{E^o}}}{{RT}}}}$      ....  $(ii)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Select the correct statement about the given complex
Given below are two statements :

Statement $-I :$ The pentavalent oxide of group$- 15$ element. $E _{2} O _{5}$. is less acidic than trivalent oxide. $E _{2} O _{3}$. of the same element.

Statement $-II :$ The acidic character of trivalent oxide of group $15$ elements. $E _{2} O _{3}$. decreases down the group.

In light of the above statements. choose most appropriate answer from the options given below

Number of complexes from the following with even number of unpaired "$d$" electrons is  . . . . . . . . . .

${\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}, \quad\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}, \quad\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},}$

${\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+},\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}}$

[Given atomic numbers: $\mathrm{V}=23, \mathrm{Cr}=24, \mathrm{Fe}=26$,

$\mathrm{Ni}=28, \mathrm{Cu}=29]$

When heated $N{H_3}$ is passed over $CuO$ gas evolved is
Select the correct code of $TRUE$ and $FA LSE$ for given statements

$(a)$ Peroxide ion as well as dioxygen molecule both are paramagnetic  species
$(b)$ In set of isomers, $[Cr(H_2O)_6]Cl_3$ and $[CrCl(H_2O) _5]Cl_2 . H_2O,$ both compounds can easily loose water molecule on treatment with cone. $H_2SO_4$
$(c)$ During transformation $NO \to NO^+$ , bond length and magnetic  behaviour decreases 
$(d)$ An ether is more volatile than alcohol both having same molecular formula

The reaction of $\mathrm{P}_4$ with ${X}$ leads selectively to $\mathrm{P}_4 \mathrm{O}_6$. The ${X}$ is
What is the magnetic moment of a divalent ion in aqueous solution if its atomic number is 28?
White phosphorus reacts with thionyl chloride to give
value of $x$ is
Which of the following compound gives yellow solid product when reacts with $NaOI$ ?