Electrochemical series and its applications

8 questions on Electrochemical series and its applications from the Electrochemistry chapter: 2 NEET level, 3 JEE Main, 3 JEE Advanced. Each one opens with its answer and solution.

• Standard reduction potentials: Mg^2+/Mg = -2.37, Zn^2+/Zn = -0.76, Fe^2+/Fe = -0.44, Cu^2+/Cu = +0.34 V. Which metal cannot liberate H2 from 1 M HCl? NEET level
• Given E deg(F2/F-) = 2.87, E deg(Cl2/Cl-) = 1.36, E deg(Br2/Br-) = 1.09, E deg(I2/I-) = 0.54 V. The strongest oxidising agent among the following is NEET level
• E deg values (V): Fe^3+/Fe^2+ = 0.77, I2/I- = 0.54, Br2/Br- = 1.09, Cl2/Cl- = 1.36. An acidic Fe^3+ solution is added to a solution containing KI, KBr and KCl (... JEE Main level
• Standard reduction potentials (V): Mg^2+/Mg = -2.37, Al^3+/Al = -1.66, Zn^2+/Zn = -0.76, Fe^2+/Fe = -0.44, Ni^2+/Ni = -0.25, Cu^2+/Cu = +0.34, Ag+/Ag = +0.80, H... JEE Main level
• Which of the following statements about the electrochemical series are correct? JEE Main level
• An iron strip (in excess) is dipped into 100 mL of 0.200 M CuSO4 and left until the reaction is complete. Given E deg(Fe^2+/Fe) = -0.44, E deg(Fe^3+/Fe^2+) = 0.... JEE Advanced level
• Given E deg(H+/H2) = 0.00, E deg(O2, H+/H2O) = 1.23, E deg(Na+/Na) = -2.71, E deg(Cu^2+/Cu) = 0.34, E deg(Ag+/Ag) = 0.80, E deg(F2/F-) = 2.87 V. Which pair of s... JEE Advanced level
• E deg values (V): Ag+/Ag = 0.80, Fe^3+/Fe^2+ = 0.77, Cu^2+/Cu = 0.34, Fe^2+/Fe = -0.44, Zn^2+/Zn = -0.76, Al^3+/Al = -1.66. Zinc dust is added to a solution con... JEE Advanced level