Q68.For a Mg Mg2+(aq) Ag+(aq) Ag the correct Nernst Equation is : [Ag+] [Ag+]2 (1) (2) Ecell = Eocell −RT2 F ln [Mg2+] Ecell = Eocell + RT2 F ln [Mg2+] (3) [Ag+]2 (4) [Mg2+] cell −RT2 F ln [Ag+] Ecell = Eocell −RT2 F ln [Mg2+] Ecell = Eo
What This Question Tests
This question tests the knowledge of trends in melting points among transition metals, which are influenced by the strength of metallic bonding due to unpaired d-electrons.
Concepts Tested
📚 NCERT Sections This Tests
2.4 — Calculate The Standard Cell Potentials Of Galvanic Cell In Which The Following
Chemistry Class 11 · Chapter 2
2.4 Calculate the standard cell potentials of galvanic cell in which the following reactions take place: (i) 2Cr(s) + 3Cd2+(aq) ® 2Cr3+(aq) + 3Cd (ii) Fe2+(aq) + Ag+(aq) ® Fe3+(aq) + Ag(s) Calculate the DrGo and equilibrium constant of the reactions. 2.5 Write the Nernst equation and emf of the following cells at 298 K: (i) Mg(s)|Mg2+(0.001M)||Cu2+(0.0001 M)|Cu(s) (ii) Fe(s)|Fe2+(0.001M)||H+(1M)|H2(g)(1bar)| Pt(s) (iii) Sn(s)|Sn2+(0.050 M)||H+(0.020 M)|H2(g) (1 bar)|Pt(s) (iv) Pt(s)|Br–(0.010 M)|Br2(l )||H+(0.030 M)| H2(g) (1 bar)|Pt(s).
2.2 — Given The Standard Electrode Potentials,
Chemistry Class 11 · Chapter 2
2.2 Given the standard electrode potentials, K+/K = –2.93V, Ag+/Ag = 0.80V, Hg2+/Hg = 0.79V Mg2+/Mg = –2.37 V, Cr3+/Cr = – 0.74V Arrange these metals in their increasing order of reducing power.
2.6 — In The Button Cells Widely Used In Watches And Other Devices The Following
Chemistry Class 11 · Chapter 2
2.6 In the button cells widely used in watches and other devices the following reaction takes place: Zn(s) + Ag2O(s) + H2O(l) ® Zn2+(aq) + 2Ag(s) + 2OH–(aq) Determine DrGo and Eo for the reaction.
📋 Question Details
- Chapter
- d-block & f-block Elements
- Topic
- Properties of d-block elements
- Year
- 2025
- Shift
- 29 Jan Shift 1
- Q Number
- Q68
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 8: d- and f-Block Elements
More from this Chapter
Q41.The major components in "Gun Metal" are: (1) Cu, Sn and Zn (2) Al, Cu, Mg and Mn (3) Cu, Ni and Fe (4) Cu, Zn and Ni
Q95.Lanthanoid contraction is caused due to (1) the appreciable shielding on outer electrons by 4f (2) the appreciable shielding on outer electrons by 5d electrons from the nuclear charge electrons from the nuclear charge (3) the same effective nuclear charge from Ce to Lu (4) the imperfect shielding on outer electrons by 4f electrons from the nuclear charge
Q72.Identify the incorrect statement among the following (1) d− Block elements show irregular and erratic (2) La and Lu have partially filled d orbitals and no chemical properties among themselves other partially filled orbitals (3) The chemistry of various lanthanoids is very (4) 4f and 5f orbitals are equally shielded similar
Q73.The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because JEE Main 2007 JEE Main Previous Year Paper (1) the 5f orbitals are more buried than the 4f (2) there is a similarity between 4f and 5f orbitals in orbitals their angular part of the wave function (3) the actinoids are more reactive than the (4) the 5f orbitals extend further from the nucleus lanthanoids than the 4f orbitals