The standard reduction potential for Cu2+/Cu; Zn2+/Zn; Li+/Li; Ag+/Ag and H+/H2 are 0.34 V, –0.762 V, –3.05 V, + 0.80 V and 0.00 V respectively. Choose the strongest reducing agent among the following.
Zn
H2
Ag
Li
Additional Questions
|
The standard reduction potentials of Ag, Cu, Co and Zn are 0.799, 0.337, –0.277 and –0.762 V respectively. Which of the following cells will have maximum cell e.m.f.? |
Answer |
|
The Eo |
Answer |
|
The oxidation state of chromium in the final product formed by the reaction between Kl and acidified potassium dichromate solution is |
Answer |
|
Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.3 S m–1. If resistance of the 0.4 M solution of the same electrolyte is 260 Ω, its molar conductivity is |
Answer |
|
E1, E2 and E3 are the emf values of the three galvanic cells respectively. (a) Zn | Zn+2 (b) Zn | Zn+2 (c) Zn | Zn+2 Which one of the following is true? |
Answer |
|
Which among the following metals is employed to provide cathodic protection to iron? |
Answer |
|
The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mhos cm2 and at infinite dilution is 400 mhos cm2. The dissociation constant of this acid is |
Answer |
|
The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the reaction of the cell is |
Answer |
|
9.65 C of electric current is passed through fused anhydrous magnesium chloride. The magnesium metal thus, obtained is completely converted into a Grignard reagent. The number of moles of the Grignard reagent obtained is ______. |
Answer |
|
An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to |
Answer |