Electrochemistry questions
1808 published questions with worked solutions.
- High purity (>99.95%) dihydrogen is obtained by (A) Reaction of zinc with aqueous alkali (B) Electrolysis of acidified water...
- The cell potential for Zn|Zn^ 2+ (aq)||Sn^ x+ |Sn is 0.801 V at 298 K. The reaction quotient for the above reaction is 10^ -2 ....
- The correct order of reduction potentials of the following pairs is (A) Cl_ 2 /Cl^ - , (B) I_ 2 /I^ - , (C) Ag^ + /Ag, (D) Na^ +...
- A solution of Fe_ 2 (SO_ 4 )_ 3 is electrolyzed for 'x' min with a current of 1.5 A to deposit 0.3482 g of Fe. The value of x is...
- In a cell, the following reactions take place: Fe^ 2+ Fe^ 3+ + e^ - (E^ (Fe^ 3+ /Fe^ 2+ ) = 0.77 V) and 2I^ - I_ 2 + 2e^ - (E^...
- The amount of charge in F (Faraday) required to obtain one mole of iron from Fe_ 3 O_ 4 is _____. (Nearest integer)
- Cu(s) + Sn^ 2+ (0.001M) Cu^ 2+ (0.01M) + Sn(s). The Gibbs free energy change for the above reaction at 298 K is x 10^ -1 kJ mol^...
- The ( E/ T)_ P of different types of half cells are as follows: A 1 10^ -4 , B 2 10^ -4 , C 0.1 10^ -4 , D 0.2 10^ -4 (Where E is...
- Match List-I with List-II. List-I (Parameter): (a) Cell constant (b) Molar conductivity (c) Conductivity (d) Degree of...
- 1 10^ -5 M AgNO_3 is added to 1 L of saturated solution of AgBr. The conductivity of this solution at 298 K is __________ 10^ -8...
- At what pH, given half cell MnO_4^-(0.1 M) | M^ 2+ (0.001 M) will have electrode potential of 1.282 V ? ________ (Nearest...
- The product, which is not obtained during the electrolysis of brine solution is
- The standard reduction potential at 295 K for the following half cells are given below: NO_3^-+4H^++3e^- NO(g)+2H_2O E^0 = 0.97...
- Consider the following cell reaction: 2Fe_ (s) + O_ 2(g) + 4H^+_ (aq) 2Fe^ 2+ _ (aq) + 2H_2O(l) E^ = 1.67 V At [ Fe^ 2+ ] = 10^...
- The standard reduction potential data at 25 °C is given below. E^ ( Fe^ 3+ , Fe^ 2+ ) = +0.77 V; E^ ( Fe^ 2+ , Fe ) = -0.44 V E^...
- In a galvanic cell, the salt bridge
- For the following electrochemical cell at 298 K, Pt (s) ,| , H_2 (g,1 bar ) ,| , H^+ (aq,1 M ) , | , M^ 4+ (aq), M^ 2+ (aq) ,| ,...
- The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of...
- For the electrochemical cell, Mg (s) ,| , Mg^ 2+ (aq,1 M ) , | , Cu^ 2+ (aq,1 M ) ,| , Cu (s) the standard emf of the cell is...
- Which one of the following elements corrodes rapidly ?
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