Q. 1

# Which cell will measure standard electrode potential of copper electrode?A. Pt (s) | H2 (g, 0.1 bar) | H+ (aq., 1 M) || Cu2+(aq., 1M) | CuB. Pt(s) | H2 (g, 1 bar) | H+ (aq., 1 M) || Cu2+ (aq., 2 M) | CuC. Pt(s)| H2 (g, 1 bar) | H+ (aq., 1 M) || Cu2+ (aq., 1 M) | CuD. Pt(s) | H2 (g, 1 bar) | H+ (aq., 0.1 M) || Cu2+ (aq., 1 M) | Cu

When an electrode potential (which is a potential difference that develops between the electrode and electrolyte), has values of the concentrations of all the species involved in a half-cell equal to unity, it is known as standard electrode potential.

The standard hydrogen electrode which is assigned a zero potential for all temperatures to measure the potential of the given half-cell. The electrode is represented as Pt(s)|H2(g)|H+(aq) and the equation is given as H+(aq) + e- 1/2H2(g).

This leads to the conclusion that the pressure of hydrogen gas is 1 bar and the concentration of hydrogen ions in solution is 1 M. We place the SHE on the left and copper electrode on the right, which will help us find the standard reduction potential of copper electrode.

If the concentration of copper’s reduced and oxidized forms are at unity, then the reduction potential is equal to standard potential. So, for the half-cell equation,

Cu2+ (aq, 1M) + 2e Cu(s), the cell that will measure the electrode potential is

Pt(s)| H2 (g, 1 bar) | H+ (aq., 1 M) || Cu2+ (aq., 1 M) | Cu.

Thus, the correct option is (iii).

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Electrochemistry - 0763 mins
Nernst Equation - Learn the Concept33 mins
Difference between electrochemical and electrolysis45 mins
Electrochemistry - 0621 mins
Electrochemistry - 0464 mins
Application of Nerst Equation20 mins
Master Concept of Oxidising and Reducing agent42 mins
Nernst Equation (Conceptual Class)66 mins
Electrochemistry - 0560 mins
Electrochemistry - 0172 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses