Home
Class 12
CHEMISTRY
Select the correct statements if 9.65 A ...

Select the correct statements if `9.65 A` current is passed for 1 hour through the cell `:`
`Ag|Ag^(o+)(1M)||Cu^(2+)(1M)|Cu`.

A

`Ag` will oxidize to `Ag^(o+)` and new `[Ag^(o+)]=1.36M`.

B

`Ag^(o+) ` will reduce to `Ag` and new `[Ag^(o+)]=0.64M`

C

`Cu^(2+)` will reduce to `Cu` and new `[Cu^(2+)]=0.82M`.

D

`Cu` will oxidize to `Cu^(2+)` and new `[Cu^(2+)]=0.82M`.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to analyze the electrochemical cell and the changes that occur when a current is passed through it. The cell in question is: \[ \text{Ag} | \text{Ag}^+ (1M) || \text{Cu}^{2+} (1M) | \text{Cu} \] ### Step-by-Step Solution: 1. **Identify the Reactions**: - In the anode compartment (left side), silver (Ag) is oxidized to silver ions (Ag⁺): \[ \text{Ag} \rightarrow \text{Ag}^+ + e^- \] - In the cathode compartment (right side), copper ions (Cu²⁺) are reduced to copper (Cu): \[ \text{Cu}^{2+} + 2e^- \rightarrow \text{Cu} \] 2. **Calculate Total Charge Passed**: - Current (I) = 9.65 A - Time (t) = 1 hour = 3600 seconds - Total charge (Q) can be calculated using the formula: \[ Q = I \times t = 9.65 \, \text{A} \times 3600 \, \text{s} = 34740 \, \text{C} \] 3. **Convert Charge to Faraday**: - 1 Faraday (F) = 96500 C - The total charge in Faraday is: \[ \text{Charge in Faraday} = \frac{Q}{F} = \frac{34740 \, \text{C}}{96500 \, \text{C/mol}} \approx 0.36 \, \text{mol} \] 4. **Determine Moles of Ag⁺ Produced**: - From the oxidation of silver, 1 Faraday produces 1 mole of Ag⁺. - Therefore, 0.36 Faraday will produce: \[ \text{Moles of Ag}^+ = 0.36 \, \text{mol} \] 5. **Calculate New Concentration of Ag⁺**: - Initial concentration of Ag⁺ = 1 M - Volume of the solution is assumed to be 1 L for simplicity. - New concentration of Ag⁺: \[ \text{New concentration of Ag}^+ = 1 + 0.36 = 1.36 \, \text{M} \] 6. **Determine Moles of Cu²⁺ Reduced**: - For copper, 2 Faraday are required to produce 1 mole of Cu. - Therefore, 0.36 Faraday will produce: \[ \text{Moles of Cu}^{2+} \text{ reduced} = \frac{0.36}{2} = 0.18 \, \text{mol} \] 7. **Calculate New Concentration of Cu²⁺**: - Initial concentration of Cu²⁺ = 1 M - New concentration of Cu²⁺: \[ \text{New concentration of Cu}^{2+} = 1 - 0.18 = 0.82 \, \text{M} \] ### Final Statements: - **Correct Statements**: - Silver will oxidize to Ag⁺ and new Ag⁺ concentration is 1.36 M. - Cu²⁺ will reduce to Cu and new Cu²⁺ concentration is 0.82 M. ### Summary of Correct Options: - Option A: Ag will oxidize to Ag⁺ and new Ag⁺ concentration is 1.36 M. (Correct) - Option C: Cu²⁺ will reduce to Cu and new Cu²⁺ concentration is 0.82 M. (Correct)

To solve the problem, we need to analyze the electrochemical cell and the changes that occur when a current is passed through it. The cell in question is: \[ \text{Ag} | \text{Ag}^+ (1M) || \text{Cu}^{2+} (1M) | \text{Cu} \] ### Step-by-Step Solution: 1. **Identify the Reactions**: - In the anode compartment (left side), silver (Ag) is oxidized to silver ions (Ag⁺): ...
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Ingle Correct|178 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exerciseassertion -Reasoning|25 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise(Linked Comprehension )|30 Videos
  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|29 Videos
  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

Select the correct statement, for non stoichiometric cuprous oxide Cu_(1.8)O .

Select the correct cell reaction of the cell Ag(s)|Ag^+(aq)"||"cu^(2+)(aq)"|"cu(s) :

A variable, opposite external potential (E_(ext) is applied to the cell : Zn|Zn^(2+)(1M)||Cu^(2+) (1M)|Cu, of potential 1.1 V.respectively electrons flow from :

A graph is plotted between E_(cell) and log .([Zn^(2+)])/([Cu^(2+)]) . The curve is linear with intercept on E_(cell) axis equals to 1.10V . Calculate E_(cell) for the cell. Zn(s)||Zn^(2+)(0.1M)||Cu^(2+)(0.01M)|Cu

Calculate the standard electrode potential of Ni^(2+) /Ni electrode if emf of the cell Ni_((s)) |Ni^(2+) (0.01M)| |CU^(2)| Cu _((s))(0.1M) is 0.059 V. [Given : E_(Cu^(2+)//Cu)^(@) =+0.34V

The following galvanic cell was underset(100mL) (Zn|Zn^(2+) (1M) )|| underset("100mL")(Cu^(2+) (1M) |Cu) operated as an electrolytic cell using Cu as anode and Zn cathode. A current of 0.48A was passed for 10 hrs then cell was allowed to function as galvanic cell. What would be the emf the cell at 25^(@)C? Assume that the only electrode reactions occuring were those involving.

The value of reaction quotient Q for the cell Zn(s)|Zn^(2+)(0.01M)||Ag^(o+)(1.25M)|Ag(s) is

Write the nearest equation and calculate the e.m.f. of the following cell at 298 K Cu(s)|Cu^(2+)(0.130M)||Ag^(+)(1.00xx10^(-4)M)|Ag(s) Given :E_(Cu^(2+)//Cu)^(@)=0.34V and E_(Ag^(+)//Ag)^(@)=+0.80V

E_(1) , E_(2) and E_(3) are the emfs of the following three galvanic cells respectively I. Zn((s)) | Zn^(2+) (0.1M) | | CU^(2+) (1M) | Cu((s)) II. Zn((s)) ZN^(2+) (1M) || Cu^(2+)(1M) | Cu(s) III. Zn(s) | Zn^(2+) (1M) || CU^(2+)(0.1M)CU(s)

Calculate the emf of the following cell at 25^(@)C : Ag(s)| Ag^(+)(10^(-3)M)||Cu^(2+)(10^(-1)M)|Cu(s)" Give "E_("cell")^(@)=-0.46 V and log 10^(n)=n

CENGAGE CHEMISTRY ENGLISH-ELECTROCHEMISTRY-Exercisemultiple Correct Ansers
  1. Select the correct statements (s) about SHE.

    Text Solution

    |

  2. In which of the following salt bridge is not needed ?

    Text Solution

    |

  3. Select the correct statements if 9.65 A current is passed for 1 hour t...

    Text Solution

    |

  4. The temperature coefficient of the cell is ((delE)/(delT))(P). Choose ...

    Text Solution

    |

  5. During discharging of alead storage battery

    Text Solution

    |

  6. Which of the following statements is / are correct ?

    Text Solution

    |

  7. Identify the correct statements (s):

    Text Solution

    |

  8. Which of the following cells is // are rechargeable or secondary cell ...

    Text Solution

    |

  9. For I(2)+2e^(-) rarr 2I^(-), standard reduction potential =+0.54 V. Fo...

    Text Solution

    |

  10. Consider the cell : Pt|H(2)(p(1)atm)|H^(o+)(x(1)M) || H^(o+)(x(2)M)|...

    Text Solution

    |

  11. Which of the following changes will cause the free energy of a cell re...

    Text Solution

    |

  12. During the working of a galvanic cell and with the passage of time. ...

    Text Solution

    |

  13. In the following electrochemical cell : Zn|Zn^(2+)||H^(o+)|(H(2))Pt ...

    Text Solution

    |

  14. Consider the cell : Cd(s)|Cd^(2+)(1.0M)||Cu^(2+)(1.0M)|Cu(s) If we...

    Text Solution

    |

  15. Electrolysis of aqueous solutions of which of the following substance...

    Text Solution

    |

  16. When an aqueous solution of CaCl(2) is electrolyzed using inert electr...

    Text Solution

    |

  17. On passing 0.5 mole of electrons through CuSO(4) and Hg(2)(NO(3))(2) s...

    Text Solution

    |

  18. Which of the following statements is // are correct ?

    Text Solution

    |

  19. If same quantity of electricity is passed through three electrolytic c...

    Text Solution

    |

  20. Which of the following aqueous solutions remain alkaline after electro...

    Text Solution

    |