Electrochemistry questions
1808 published questions with worked solutions.
- What is number of moles of electron passed when a current of 2 Amp flows through solution of electrolyte for 10 minutes?
- Assume the cell reaction, A_ (s) + B^ +2 _ (aq) A^ +2 _ (aq) + B_ (s) if G^ = -386 kJ at 298 K. What is E^0 cell?
- Which of the following change takes place at positive electrode during working of dry cell?
- Which from following statement is correct regarding emf of cell for the cell reaction, Cd_ (s) + Cu^ +2 _ (aq) Cd^ +2 _ (aq) +...
- Standard potential (E^0) of Zn^ +2 _ (aq) + 2 e Zn_ (s) is -0.76 V. What is standard potential of reaction 2 ,Zn_ (s) 2Zn^ +2 _...
- Which from following formulae is used to obtain value of E^0_ cell for a reaction taking place in Dry cell?
- Which of the following expressions indicates the correct relationship between molar conductivity of strong electrolyte and its...
- If molar conductance at infinite dilution for CH_3COO^- and H^+ ions are 50 S cm^2 mol^ -1 and 350 S cm^2 mol^ -1 respectively,...
- Determine the electrode potential of Sn^ 2+ (0.01M) | Sn(s) at 25^0C if E^0_ Sn is -0.136 V.
- What is the molar conductivity of 0.02 M KI solution if its conductivity is 4.37 x 10^ -4 ^ -1 cm^ -1 ?
- What is the quantity of electricity required to produce 8 g of Mg (molar mass = 24 g mol^ -1 ) from MgCl_2 solution?
- If E^0 ,( Ag^+_ (aq) ,| ,Ag_ (s) ) = +0.80 V What is potential developed for Ag_ (s) Ag^ +1 ,(0.01 , M ) + e at 298 K?
- Which of the following relations about E^0_ cell is false?
- For the cell reaction, 2 Al_ (s) + 3 Cu^ +2 _ (aq) 2 Al^ +3 _ (aq) + 3 Cu_ (s) If G^ = -1158 kJ, What is E^0_ cell ?
- Select false statement from the following regarding electrochemical cell
- If E^0 (Mg^ +2 _ (aq) Mg_ (s) ) = -2.37 V. What is potential for Mg_ (s) Mg^ +2 ,(0.1 M) + 2 e at 298 K?
- If standard emf of cell Zn_ (s) Cu^ 2+ _ (1M) Ag^ 1+ _ (1M) Ag_ (s) is 1.55 V. What is electrical work done under standard...
- If E^0 ( Fe^ +2 _ (aq) Fe_ (s) ) = -0.44 V and E^0 ( Sn^ +2 _ (aq) Sn_ (s) ) = -0.14 V. What is standard emf of cell containing...
- If E^0 ( Al^ +3 _ (aq) Al_ (s) ) = -1.66 V. What is potential of Al_ (s) Al^ +3 (0.1 ,M) + 3 e at 298 K?
- Which of the following reactions exhibit minimum standard reduction potential?
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