Practice Electrochemistry with authentic CBSE Chemistry exam questions for both SL and HL students. This question bank mirrors Paper 1, 2, 3 structure, covering key topics like atomic structure, chemical reactions, and organic chemistry. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of CBSE examiners.
A copper-silver cell is set-up. The copper ion concentration is 0.10 M. The concentration of silver ion is not known. The cell potential when measured was 0.422 V.
Determine the concentration of silver ions in the cell.
Calculate the time to deposit 1.27 g of copper at cathode when a current of 2A was passed through the solution of CuSO4. (Molar mass of Cu= 63.5g mol-1, 1F = 96500 C mol-1)
Perform the calculation.
What should be the signs (positive/negative) for and for a spontaneous redox reaction occurring under standard conditions?
State Faraday's first law of electrolysis.
Calculate the and emf (E) that can be obtained from the following cell under the standard conditions at 25oC.
[Given, = -0.76 V; = -0.14 V and F = 96500 Cmol-1].
The electrical resistance of a column of 0.05 M KOH solution of diameter 1 cm and length 45.5 cm is 4.55 103 ohm.
Calculate its molar conductivity.
Given : E°Cr3+/Cr = -0.75 V E°Fe2+/Fe = -0.45 V (log 10 = 1)
Write the Nernst equation for the following cell at 298 K: Cr | Cr3+ (0.1 M) || Fe2+ (0.01 M) | Fe
Calculate emf of the given cell at 298 K.
Calculate for acetic acid, Given that, (HCI) = 426S cm2 ml-1 (NaCl)=126S cm2 ml-1 (CH3COONa) = 91S cm2 ml-1
Calculate for acetic acid.
Calculate the emf of the following cell at 25°C: Zn(s) | Zn²⁺ (0.1 M) || H⁺ (0.01 M) | H₂ (g) (1 bar), Pt (s) [Given: E°(Zn²⁺/Zn) = -0.76 V, E°(H⁺/H₂) = 0.00 V, log 10 = 1]
State Kohlrausch law of independent migration of ions.
Why does the conductivity of a solution decrease with dilution?
Out of the following pairs, predict with reason which pair will allow greater conduction of electricity:
Silver wire at 30oC or silver wire at 60oC.
0.1 M CH3COOH solution or 1 M CH3COOH solution.
KCl solution at 20oC or KCl solution at 50oC.
Give two points of differences between electrochemical and electrolytic cells.
Which of the following solutions of KCl will have the highest value of specific conductance?
Practice Electrochemistry with authentic CBSE Chemistry exam questions for both SL and HL students. This question bank mirrors Paper 1, 2, 3 structure, covering key topics like atomic structure, chemical reactions, and organic chemistry. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of CBSE examiners.
A copper-silver cell is set-up. The copper ion concentration is 0.10 M. The concentration of silver ion is not known. The cell potential when measured was 0.422 V.
Determine the concentration of silver ions in the cell.
Calculate the time to deposit 1.27 g of copper at cathode when a current of 2A was passed through the solution of CuSO4. (Molar mass of Cu= 63.5g mol-1, 1F = 96500 C mol-1)
Perform the calculation.
What should be the signs (positive/negative) for and for a spontaneous redox reaction occurring under standard conditions?
State Faraday's first law of electrolysis.
Calculate the and emf (E) that can be obtained from the following cell under the standard conditions at 25oC.
[Given, = -0.76 V; = -0.14 V and F = 96500 Cmol-1].
The electrical resistance of a column of 0.05 M KOH solution of diameter 1 cm and length 45.5 cm is 4.55 103 ohm.
Calculate its molar conductivity.
Given : E°Cr3+/Cr = -0.75 V E°Fe2+/Fe = -0.45 V (log 10 = 1)
Write the Nernst equation for the following cell at 298 K: Cr | Cr3+ (0.1 M) || Fe2+ (0.01 M) | Fe
Calculate emf of the given cell at 298 K.
Calculate for acetic acid, Given that, (HCI) = 426S cm2 ml-1 (NaCl)=126S cm2 ml-1 (CH3COONa) = 91S cm2 ml-1
Calculate for acetic acid.
Calculate the emf of the following cell at 25°C: Zn(s) | Zn²⁺ (0.1 M) || H⁺ (0.01 M) | H₂ (g) (1 bar), Pt (s) [Given: E°(Zn²⁺/Zn) = -0.76 V, E°(H⁺/H₂) = 0.00 V, log 10 = 1]
State Kohlrausch law of independent migration of ions.
Why does the conductivity of a solution decrease with dilution?
Out of the following pairs, predict with reason which pair will allow greater conduction of electricity:
Silver wire at 30oC or silver wire at 60oC.
0.1 M CH3COOH solution or 1 M CH3COOH solution.
KCl solution at 20oC or KCl solution at 50oC.
Give two points of differences between electrochemical and electrolytic cells.
Which of the following solutions of KCl will have the highest value of specific conductance?