JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Given below are two statements Statement \(I :\) The \(E ^{\circ}\) value of \(Ce ^{4+} / Ce ^{3+}\) is \(+1.74 \,V\) Statement \(II :\) \(Ce\) is more stable in \(Ce ^{4+}\) state than \(Ce ^{3+}\) state. In the light of the above statements, choose the most appropriate answer from the options given below
- A Both statement \(I\) and statement \(II\) are correct
- B Statement \(I\) is incorrect but statement \(II\) is correct
- C Both statement \(I\) and statement \(II\) are incorrect
- D Statement \(I\) is correct but statement \(II\) is incorrect
Answer & Solution
Correct Answer
(D) Statement \(I\) is correct but statement \(II\) is incorrect
Step-by-step Solution
Detailed explanation
The \(E ^{\circ}\) value for \(Ce ^{4+} / Ce ^{3+}\) is \(+1.74 V\) because the most stable oxidation state of lanthanide series elements is \(+3\) . It means \(Ce ^{3+}\) is more stable than \(Ce ^{4+}\)
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
- Given is a concentrated solution of a weak electrolyte \(A_xB_y\) of concentration 'c' and dissociation constant 'K'. The degree of dissociation is given by :JEE Mains 2026 Hard
- The major product of the following reaction is \(C{H_3}CH = CHC{O_2}C{H_3}\,\xrightarrow{{LiAl{H_4}}}\)JEE Mains 2019 Hard
- Arrange the bonds in order of increasing ionic character in the molecules.
[\(\mathrm{LiF}, \mathrm{K}_2 \mathrm{O}, \mathrm{N}_2, \mathrm{SO}_2\) and \(\mathrm{CIF}_3\)]JEE Mains 2024 Hard - For the reaction, \(A(g) + B(g) \to C(g) + D(g),\) \(\Delta H^o\) and \(\Delta S^o\) are, respectively, \(-29.8\,\,kJ\, mol^{-1}\) and \(-0.100\,\,kJ\,K^{-1}\) \(mol^{-1}\) at \(298\,K.\) The equilibrium constant for the reaction at \(298\,K\) isJEE Mains 2016 Hard
- Stability of \(\alpha\)-Helix structure of proteins depends uponJEE Mains 2022 Easy
- At \(600\,K , 2\,mol\) of \(NO\) are mixed with \(1 mol\) of \(O _{2}\). \(2 NO _{( g )}+ O _{2}( g ) \rightleftarrows 2 NO _{2}( g )\) The reaction occurring as above comes to equilibrium under a total pressure of 1 atom. Analysis of the system shows that \(0.6 mol\) of oxygen are present at equilibrium. The equilibrium constant for the reaction is \(.........\)(Nearest integer).JEE Mains 2022 Medium
More PYQs from JEE Mains
- Let \(p , q \in R\) and \((1-\sqrt{3} i )^{200}=2^{199}( p + iq )\), \(i =\sqrt{-1}\) Then \(p + q + q ^2\) and \(p - q + q ^2\) are roots of the equation.JEE Mains 2023 Hard
- If \(\cos ec\,\theta = \frac{{p + q}}{{p - q}}\) \(\left( {p \ne q \ne 0} \right)\), then \(\left| {\cot \left( {\frac{\pi }{4} + \frac{\theta }{2}} \right)} \right|\) is equal toJEE Mains 2014 Hard
- Let the product of the focal distances of the point \(\left(\sqrt{3}, \frac{1}{2}\right)\) on the ellipse \(\frac{x^2}{a^2}+\frac{y^2}{b^2}=1,(\mathrm{a}\gt\mathrm{b})\), be \(\frac{7}{4}\). Then the absolute difference of the eccentricities of two such ellipses isJEE Mains 2025 Hard
- From a tower of height \(H\), a particle is thrown vertically upwards with a speed \( u\). The time taken by the particle, to hit the ground, is \(n\) times that taken by it to reach the highest point of its path. The relation between \(H, u\) and \(n\) is:JEE Mains 2014 Hard
- If \(\mathop {\lim }\limits_{x \to \infty } {\left( {1 + \frac{a}{x} - \frac{4}{{{x^2}}}} \right)^{2x}} = {e^3},\) then \('a'\) is equal toJEE Mains 2016 Hard
- \(100\, \mathrm{~g}\) of propane is completely reacted with \(1000\, \mathrm{~g}\) of oxygen. The mole fraction of carbon dioxide in the resulting mixture is \(\mathrm{x} \times 10^{-2}\). The value of \(\mathrm{x}\) is ..... . (Nearest integer) [Atomic weight : \(\mathrm{H}=1.008 ; \mathrm{C}=12.00 ; \mathrm{O}=16.00\) ]JEE Mains 2021 Hard