Types of Electrodes

Example for redox electrode

• Calomel electrode

• Glass electrode

• Quin Hydrone electrode

• Zn/Zn²⁺Electrode

Calomel means

• Mixture of Hg & MgCl₂

• Mixture of Hg & HgCl₂

• Mixture of Mg & HgCl₂

• Mixture of Ag & AgCl₂

H₂ gas electrode is reversible with respect to ----------ions

• H⁺

• Ca²⁺

• Cl^-

• Mg²⁺

Quin Hydrone electrode is

• 1:1 Mixture of quinone and Hydroqunone

• 1:2 Mixture of quinone and Hydroqunone

• 2:1 Mixture of quinone and Hydroqunone

The potential developed due to gain of electrons

• Oxidation Potential

• Electrode potential

• Reduction Potential

• None

Calomel electrode is constructed using a solution of

• saturated KCl

• saturated CaCl ₂

• saturated NH₄Cl

• saturated NaCl

The conductance of ions, present in one cubic centimeter of the solution.

• Ionic Conductance

• Specific Conductance

• Molar Conductance

• Equivalent conductance

The standard reduction potential at 298K for Zn +2 , Cr +3 , H + andFe +3 are -0.76V, -0.74V, -0.0V

and 0.77V respectively, the strongest reducing agent among there is

• H ⁺

• Cr ⁺³

• Zn ⁺²

• Fe ⁺³

The standard reduction potential at 298K for Zn +2 , Cr +3 , H + and Fe +3 are 0.76V, -0.74V, -0.0V

and 0.77V respectively, Which species under go reduction readily

• H ⁺

• Cr ⁺³

• Zn ⁺²

• Fe ⁺³

The EMF of a cell is [ ]

• a. Sum of the two oxidation potential

• b. Sum of the two reduction potential

• c. Difference of two electrode potential

• d. difference in energy