Q47.For the cell Zn(s) Zn2+(aq)∥Mx+(aq) M(s), different half cells and their standard electrode potentials are given below: JEE Main 2019 (11 Jan Shift 1) JEE Main Previous Year Paper If E∘ = −0.76 V, which cathode will give a maximum value of E cell0 per electron transferred? Zn2+/Zn (1) Ag+/Ag (2) Fe3+/Fe2+ (3) Au3+/Au (4) Fe2+/Fe
What This Question Tests
This question tests the ability to calculate the standard cell potential and then normalize it per electron transferred to find the maximum value among given cathode options.
Concepts Tested
Formulas Used
E°cell = E°cathode - E°anode
📚 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.
2.3 — Depict The Galvanic Cell In Which The Reaction
Chemistry Class 11 · Chapter 2
2.3 Depict the galvanic cell in which the reaction Zn(s)+2Ag+(aq) ®Zn2+(aq)+2Ag(s) takes place. Further show: (i) Which of the electrode is negatively charged? (ii) The carriers of the current in the cell. (iii) Individual reaction at each electrode.
📋 Question Details
- Chapter
- Electrochemistry
- Topic
- Standard electrode potential and cell potential
- Year
- 2019
- Shift
- 11 Jan Shift 1
- Q Number
- Q47
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 3: Electrochemistry
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