Electrochemistry questions
1808 published questions with worked solutions.
- The pH and conductance of a weak acid (HX) was found to be 5 and 4 10^ -5 S, respectively. The conductance was measured under...
- MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K MX(s) M^+(aq) + X^-(aq); K_ sp = 10^ -10 If...
- Consider the following electrochemical cell at 298 K Pt|HSnO_2^-(aq)|Sn(OH)_6^ 2- (aq)|Bi_2O_3(s)|Bi(s). If the reaction quotient...
- In the given electrochemical cell, Ag(s)|AgCl(s)|FeCl_2(aq), FeCl_3(aq)|Pt(s) at 298 K, the cell potential (E_ cell ) will...
- Electricity is passed through an acidic solution of Cu^ 2+ till all the Cu^ 2+ was exhausted, leading to the deposition of 300 mg...
- Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be 1/30 of the molar conductivity of another weak acid...
- For strong electrolyte _m increases slowly with dilution and can be represented by the equation _m= °_m-Ac^ 1/2 Molar...
- A volume of x mL of 5M ,NaHCO_3 solution was mixed with 10 mL of 2M ,H_2CO_3 solution to make an electrolytic buffer. If the same...
- A solution of aluminium chloride is electrolysed for 30 minutes using a current of 2A. The amount of the aluminium deposited at...
- Which of the following electrolyte can be used to obtain H2S2O8 by the process of electrolysis?
- Given below are two statements : Statement (I) : Corrosion is an electrochemical phenomenon in which pure metal acts as an anode...
- Electrolysis of 600 mL aqueous solution of NaCl for 5 min changes the pH of the solution to 12. The current in Amperes used for...
- The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is...
- For a Mg | Mg²⁺ (aq) || Ag⁺(aq) | Ag the correct Nernst Equation is :
- Match List-I with List-II : List-I (Applications): (A) Transistors (B) Hearing aids (C) Invertors (D) Apollo space ship List-II...
- O_2 gas will be evolved as a product of electrolysis of : (A) an aqueous solution of AgNO_3 using silver electrodes. (B) an...
- 0.2% (w/v) solution of NaOH is measured to have resistivity 870.0 mΩ m. The molar conductivity of the solution will be _____ ×...
- Consider the following electrochemical cell at standard condition. Au(s)|QH₂,Q|NH₄X(0.01 M)||Ag⁺(1 M)|Ag(s) Ecell = + 0.4 V The...
- The standard cell potential (E_ cell ^ ) of a fuel cell based on the oxidation of methanol in air that has been used to power...
- Consider the following half cell reaction Cr_2O_7^ 2- (aq) + 6e^- + 14H^+ (aq) 2Cr^ 3+ (aq) + 7H_2O( ) The reaction was conducted...
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