What happens to the pH of the solution during the electrolysis of aqueous NaCl (brine)?

1.	The pH of the solution increases	2.	The pH of the solution decreases
3.	There is no change in the pH of the solution.	4.	None of the above.

The resistance of a conductivity cell containing 0.001M KCl solution at 298 K is 1500 Ω. The cell constant, if conductivity of 0.001 M KCl solution at 298 K is 0.146 ×10^-3  S cm^-1, will be: 

1. 0.32 cm^-1

2. 0.47 cm

3. 0.22 cm^-1

4. 0.23 cm

Find the dissociation constant (Kₐ) of 0.00241 M acetic acid if its conductivity is 7.896 × 10⁻⁵ S cm⁻¹
 and its molar conductivity at infinite dilution (Λₘ°) is 390.5 S cm² mol⁻¹.

A solution of Ni(NO₃)₂ is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of nickel(Ni) is deposited at the cathode?
(Given Molar Mass of Ni = 58.7g)

Electrode potential is the potential difference between the -

1. Electrode and the electrolyte.

2. Anode and Cathode.

3. Anode and Atmosphere.

4. Cathode and Atmosphere.

The negative sign in the expression E^o_Zn²⁺/Zn = -0.76 V indicates : 

1. The reactivity of the metal increases.

2. The reactivity of the metal decreases.

3. There is no effect on the metal's reactivity.

4. None of the above.

 E_cell =0 or ${∆}_r$G =0  this condition is applicable on : 

1. Spontaneous reaction

2. Equilibrium reaction

3. Non-Equilibrium reaction

4. None of the above

Find the value of the standard cell potential (E°cell) for a feasible electrochemical cell reaction.

1. E°cell is equal to zero (E°cell = 0)
2.  E°cell is less than zero (E°cell < 0)
3. E°cell is greater than zero (E°cell > 0)
4. None of the above

Find the value of the standard cell potential (E°cell) for a non-feasible electrochemical cell reaction.

Absolute electrode potential of an electrode can't be measured because:

1. Oxidation or reduction can not occur alone.

2. Oxidation or reduction can occur alone.

3. Absolute electrode potential is an intensive property.

4. Absolute electrode potential is an extensive property.