Home
Class 12
CHEMISTRY
Calculate the e.m.f. of the cell Pt|H(...

Calculate the e.m.f. of the cell
`Pt|H_(2)(1.0atm)|CH_(3)COOH (0.1M)||NH_(3)(aq,0.01M)|H_(2)(1.0atm)|Pt`
`K_(a) (CH_(3)COOH) =1.8 xx 10^(-5), K_(b),(NH_(3)) = 1.8 xx 10^(-5)`

Text Solution

Verified by Experts

The correct Answer is:
`-0.46V`
`E=0-(0.0591)/(2)log((0.1xx1.8xx10^(-5))/([H^(+)]_(NH_(3))^(2)))`
`([OH^(-)]^(2))/(0.01)=1.8xx10^(-5)implies[H^(+)]^(2)=((10^(-14))^(2))/(1.8xx10^(-7))impliesE=-0.46"volt"`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISRY

    RESONANCE ENGLISH|Exercise CBSE Problems|34 Videos

  • ELECTRO CHEMISTRY

    RESONANCE ENGLISH|Exercise PHYSICAL CHEMITRY (ELECTROCHEMISTRY)|53 Videos

  • EQUIVALENT CONCEPT & TITRATIONS

    RESONANCE ENGLISH|Exercise Part -IV|22 Videos

Similar Questions

Explore conceptually related problems

Calculate the cell potential of following cell Pt(s)|H_(2)(g)"(0.1 bar)"|BOH(0.1M)||HA(0.1M)|H_(2)(g)("1 bar")|Pt Given K_(a)(HA)=10^(-7), K_(b)(BOH)=10^(-5)

Neglecting the liquid-liquid junction potential, calculate the emf of the following cell at 25^(@)C H_(2) (1 atm)|0.5 M HCOOH|| 1M CH_(3)COOH | (1 atm) H_(2) K_(a) " for " HCOOH and CH_(3) COOH are 1.77 xx 10^(-4) and 1.8 xx 10^(-5) respectively.

What is the concentration of CH_(3)COOH(aq.) in a solution prepared by dissolving 0.01 mole of NH_(4)^(+)CH_(3)COO^(-) in 1 L H_(2)O ? [K_(a) (CH_(3)COOH))=1.8xx10^(-5)),K_(b) (NH_(4)OH)=1.8xx10^(-5))]

Pt|H_(2)(1 atm )|H^(+)(0.001M)||H^(+)(0.1M)|H_(2)(1atm)|Pt what will be the value of E_(cell) for this cell

Calculate the pH at the equivalence point during the titration of 0.1M, 25 mL CH_(3)COOH with 0.05M NaOH solution. [K_(a)(CH_(3)COOH) = 1.8 xx 10^(-5)]

Calculate the pH at the equivalence point during the titration of 0.1M, 25 mL CH_(3)COOH with 0.05M NaOH solution. [K_(a)(CH_(3)COOH) = 1.8 xx 10^(-5)]

Calculate the percentage hydrolysis & the pH of 0.02M CH_(3)COONH_4 . K_(b)(NH_(3))-1.6xx10^(-5),K_(a)(CH_(3)COOH)=1.6xx10^(-5)

Calculate [H^(o+)] in a soluton that is 0.1M HCOOH and 0.1 M HOCN. K_(a)(HCOOH) = 1.8 xx 10^(-4), K_(a) (HoCN) = 3.3 xx 10^(-4) .

pH of a solution of 0.1 M [CH_3COONH_4(aq)] is [given: K_a(CH_3COOH) = K_b(NH_4OH) = 1.8 x 10^-5)]

Calcualte the pH of solution when 100 mL, 0.1 M CH_(3)COOH and 100 mL, 0.1 M HCOOH are mixed together. ("Given : "K_(a)(CH_(3)COOH)=2xx10^(-5)), K_(a)(HCOOH)=6xx10^(-5)

RESONANCE ENGLISH-ELECTROCHEMISRY-Advanced Level Problems
  1. K(d) for dissociation of [Ag(NH(3))(2)]^(+) into Ag^(+) and NH(3) is 6...

    Text Solution

    |

  2. The resistance of an aqueous solution containing 0.624g of CuSO(4).5H(...

    Text Solution

    |

  3. Calculate the e.m.f. of the cell Pt|H(2)(1.0atm)|CH(3)COOH (0.1M)||N...

    Text Solution

    |

  4. Calculate the equilibrium concentration of all ions in an ideal soluti...

    Text Solution

    |

  5. The expermental setup for a typical Zn-Ni galvanic cell as shown below...

    Text Solution

    |

  6. At 18^(@)C the mobilities of NH(4)^(+) and CIO(4)^(-) ions are 6.6 xx ...

    Text Solution

    |

  7. 10g fairly concentrated solution of CuSO(4) is electrolyzed using 0.01...

    Text Solution

    |

  8. An electric current is passed through electrolytic cells in series one...

    Text Solution

    |

  9. After electrlysis of NaCI solution with inert electrodes for a certain...

    Text Solution

    |

  10. Same quantity of electricity is being used to liberate iodide (at anod...

    Text Solution

    |

  11. The resistance of two electrolytes X and Y ere found to be 45 and 100 ...

    Text Solution

    |

  12. For 0.0128 N solution fo acetic at 25^(@)C equivalent conductance of t...

    Text Solution

    |

  13. Specific conductance of pure water at 25^(@)C is 0.58 xx 10^(-7) mho c...

    Text Solution

    |

  14. The reduction potential diagram for Cu in acid solution is : Calc...

    Text Solution

    |

  15. For the cellls in opposition, Zn(s)|ZnCl(2)(sol.)|AgCl(s)|Ag|AgCl(s)...

    Text Solution

    |

  16. Prove that Moment of couple= Force times couple arm

    Text Solution

    |

  17. Why zinc coating protects iron more effectively than tin coating ? ...

    Text Solution

    |

  18. For the cell (at 1bar H(2) pressure) Pt|H(2)(g)| HX(m(1)), NaX(m(2)), ...

    Text Solution

    |

  19. Delta(f)H^(Theta) per mole of NH(3)(g). NO(g), and H(2)O(l) are -11.04...

    Text Solution

    |

  20. In a galvanic cell, the half-cell having more standard potential serve...

    Text Solution

    |