The standard reduction potentials at 298K for the following half reactions are given…
Chemistry · JEE Advanced · NTA Exams — Electrochemistry
The standard reduction potentials at 298K for the following half reactions are given against each
Zn2+(aq) + 2e− \(\text { → }\) Zn(s); – 0.762 V
Cr3+(aq) + 3e− \(\text { → }\) Cr(s); – 0.740 V
2H+(aq) + 2e− \(\text { → }\) H2 (g); 0.00V
Fe3+(aq) + e− \(\text { → }\) Fe2+(aq) ; 0.770 V
Which is the strongest reducing agent ?
Zn2+(aq) + 2e− \(\text { → }\) Zn(s); – 0.762 V
Cr3+(aq) + 3e− \(\text { → }\) Cr(s); – 0.740 V
2H+(aq) + 2e− \(\text { → }\) H2 (g); 0.00V
Fe3+(aq) + e− \(\text { → }\) Fe2+(aq) ; 0.770 V
Which is the strongest reducing agent ?
- Zn(s)
- Cs(s)
- H2 (g)
- Fe3+(aq)
Answer
(A) Zn (s)
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The equivalent conductance at infinite dilution of a weak acid such as HF
- Given that array ll E _ Ni ^ 2+ / Ni ^ o =-0.25 ~V , & E _ Cu ^ 2+ / Cu ^ o =0.34 ~V , E _ Ag ^ + / Ag ^ o…
- Electrochemical series is a series of elements arranged in increasing order of their reduction potential. E _…
- Consider the following cell reaction, 2 Fe ( ~s )+ O _ 2 ( ~g )+4 H ^ + ( aq ) 2 Fe ^ +2 ( aq )+2 H _ 2 O (l)…
- During electrolysis of a concentrated aqueous solution of NaCl, what is the product at cathode?
- A 4.0 M aqueous solution of NaCl is prepared and 500 mL of this solution is electrolysed. This leads to the…
- What is the amount of chlorine evolved when 2 amperes of current is passed for 30 minutes in an aqueous…
- Zn | Zn 2+ (a = 0.1 M) || Fe 2+ (a = 0.01 M) | Fe. The emf of the above cell is 0.2905V. Equilibrium constant…
More Electrochemistry questions · Browse all practice questions