JEE Mains · Chemistry · STD 12 - 2. Electrochemistry
To find the standard potential of \(M^{3+}/M\) electrode, the following cell is constituted : \(Pt/ M/M^{3+}(0.001 \,mol\, L^{ -1})/Ag^+(0.01\, mol\, L^{-1})/Ag\) The emf of the cell is found to be \(0.421\, volt\) at \(298\, K\). The standard potential of half reaction \(M^{3+} + 3e \to M\) at \(298\, K\) will be .............. \(\mathrm{volt}\) (Given \(E_{A{g^ + }/Ag}^o \) at \(298\, K\, = 0.80\, Volt\) )
- A \(0.38\)
- B \(0.32\)
- C \(1.28\)
- D \(0.66\)
Answer & Solution
Correct Answer
(B) \(0.32\)
Step-by-step Solution
Detailed explanation
Cell reaction : \(M\, + \,3A{g^ + }(aq)\, \to \,{M^{3 + }}\, + \,3Ag(s)\) \(E\, = \,{E^o}\, - \,\frac{{0.0591}}{n}\log \,\) \(\frac{{[\operatorname{Re} duction\,\,state]}}{{[Oxidised\,\,\,state]}}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Three complexes, \([CoCl(NH_3)_5]^{2+}\, (I)\), \([Co(NH_3)_5H_2O]^{3+}\, (II)\) and \([Co(NH_3)_6]^{3+}\, (III)\) Absorb light in the visible region. The correct order of the wavelength of light absorbed by them isJEE Mains 2019 Hard
- Identify the correct statements.
A. Arginine and Tryptophan are essential amino acids.
B. Histidine does not contain heterocyclic ring in its structure.
C. Proline is a six membered cyclic ring amino acid.
D. Glycine does not have chiral centre.
E. Cysteine has characteristic feature of side chain as \( MeS-CH_{2}-CH_{2}- \)
Choose the correct answer from the options given below:JEE Mains 2026 Easy - The number of chiral centres present in \([ B ]\) is
JEE Mains 2020 Easy - The major product of the following reaction is \(\begin{array}{*{20}{c}}
{C{H_3}C{H_2}CH - C{H_2}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,Br\,\,}
\end{array}\xrightarrow[\begin{subarray}{l}
(ii)\,NaN{H_2} \\
in\,liq.\,N{H_3}
\end{subarray} ]{{(i)\,KOH\,alc.}}\)JEE Mains 2019 Hard - Given below are two statements: one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\).
Assertion \((A)\) : Both rhombic and monoclinic sulphur exist as \(S_5\) while oxygen exists as \(O_2\). Reason \((R)\) : Oxygen forms \(\mathrm{p} \pi-\mathrm{p} \pi\) multiple bonds with itself and other elements having small size and high electronegativity like \(\mathrm{C}, \mathrm{N}\), which is not possible for sulphur. In the light of the above statements, choose the most appropriate answer from the options given below :JEE Mains 2024 Medium - When 81.0 g of aluminium is allowed to react with 128.0 g of oxygen gas, the mass of aluminium oxide produced in grams is_______ - (Nearest integer)
Given :
Molar mass of Al is \(27.0 \mathrm{~g} \mathrm{~mol}^{-1}\)
Molar mass of O is \(16.0 \mathrm{~g} \mathrm{~mol}^{-1}\)JEE Mains 2025 Medium
More PYQs from JEE Mains
- The de-Broglie's wavelength of electron present in first Bohr orbit of \('H'\) atom isJEE Mains 2018 Hard
- Let \(M\) be a \(3 \times 3\) matrix such that \(M \begin{pmatrix} 1 \\ 0 \\ 0 \end{pmatrix} = \begin{pmatrix} 1 \\ 2 \\ 3 \end{pmatrix}\), \(M \begin{pmatrix} 0 \\ 1 \\ 0 \end{pmatrix} = \begin{pmatrix} 0 \\ 1 \\ 2 \end{pmatrix}\) and \(M \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} = \begin{pmatrix} -1 \\ 1 \\ 1 \end{pmatrix}\). If \(M \begin{pmatrix} x \\ y \\ z \end{pmatrix} = \begin{pmatrix} 1 \\ 7 \\ 11 \end{pmatrix}\), then \(x + y + z\) equals :JEE Mains 2026 Medium
- Let \(\alpha\) be a root of the equation \(1+x^{2}+x^{4}=0\). Then the value of \(\alpha^{1011}+\alpha^{\text {2022 }}-\alpha^{\text {3033}}\) is equal toJEE Mains 2022 Medium
- Let \(f : (-1, 1) \to R\) be a function defined by \(f\left( x \right) = \left\{ { - \left| x \right|, - \sqrt {1 - {x^2}} } \right\}\). if \(K\) be the set of all points at which \(f\) is not differentiable, then \(K\) has exactlyJEE Mains 2019 Hard
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: A sound wave has higher speed in solids than gases.
Reason R: Gases have higher value of Bulk modulus than solids.
In the light of the above statements, choose the correct answer from the options given belowJEE Mains 2025 Easy - The product of all the rational roots of the equation \(\left(x^2-9 x+11\right)^2-(x-4)(x-5)=3\), is equal toJEE Mains 2025 Medium