Home
Class 12
CHEMISTRY
Calćulate the pH of the following hal...

Calćulate the pH of the following half cell Pt, `H_2` / `H_2 SO_4` The oxidation potential is +0.3 V .

Text Solution

Verified by Experts

2 H_ toq 4 .^++2 e^- H_2(~g) Using Nernst equation, E_H^+ m_2^circ=E_H^* H_2^O+0.0591/n log .[H^+]^2/[H_2] -0.3=0+0.0591/c 2 xx 2 log [ddotH^+] -0.3=-0.0591-[-log [H^+] 0.3=0.0591 pH pH^circ=0.3/0.0591=5.076 endaligned
Promotional Banner

Topper's Solved these Questions

  • COORDINATION COMPOUNDS

    V PUBLICATION|Exercise QUESTION BANK|113 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    V PUBLICATION|Exercise QUESTION BANK|139 Videos

Similar Questions

Explore conceptually related problems

Which of the following on oxidation gives ' H_2 O_2'

Observe the following chemcial equation Cu+2H_2SO_4rarrCuSO_4+SO_2+2H_2O : Which one has oxidation state as 0?

Derive expression to calculate emf (reduction) of the following half cells at 25^@C H^+||H_2(Pt) (1 atm)

Calculate the reduction potential for the following half cells at 25^@C Pt|Fe^(2+) (0.1M)-Fe^(3+) (0.01M), E_(Fe^(3+),Fe^(2+))^@=+0.77V

Write the conjugate bases of the following: H_2SO_4,NH_3,HCO_3^- and H_2O

In which of the following S has highest oxidation state? Na_2 S_2 O_6 , S_2 Cl_2 , S_8 , H_2 SO_4

The standard reduction potential for the half cell NO_j^-(aq)+2 H^+(aq)+e^- NO_2(~g)+H_2 O is 0.78 ~V 1). Calculate the reduction potential in ' 8 MH^* ii) What will be the' reduction potential of the half cell in a neutral solution. "Assume all the other species to be at unit concentration.

Calculate the reduction potentials for the following half cells: Cu|Cu^(2+)(0.2M), E_(Cu^(2+),Cu)^@=0.34V

V PUBLICATION-ELECTROCHEMISTRY-QUESTION BANK
  1. How many grams of silver could be plated out on a shield by electrolys...

    Text Solution

    |

  2. How much time would it take in minutes to deposit 1.18 g of metallic c...

    Text Solution

    |

  3. Calćulate the pH of the following half cell Pt, H2 / H2 SO4 The ...

    Text Solution

    |

  4. The standard reduction potential of Cu^(2+)|Cu and Ag^+|Ag electrodes ...

    Text Solution

    |

  5. Chromium metal can be plated out from an acidic solution containing Cr...

    Text Solution

    |

  6. A cell Cu / Cu^2+ / / Ag^+ / Ag initially contains 1 M Ag^+ and 1 M Cu...

    Text Solution

    |

  7. Iodine (I2) and Bromine (Br2) are added to a solution containing iodin...

    Text Solution

    |

  8. In a fuel cell, hydrogen and oxygen react to produce electricity. In t...

    Text Solution

    |

  9. EMF of Daniel cell was found using different concentrations of Zn^2+ i...

    Text Solution

    |

  10. The molar conductivity of acetic acid solution at infinite dilution is...

    Text Solution

    |

  11. Copper sulphate solution (250 mL) was electrolysed using a platinum an...

    Text Solution

    |

  12. 4 ampere current was passed through an aqueous solution of an unknown ...

    Text Solution

    |

  13. Calculate the single electrode potential at 298 K of the Cu ^2 + /...

    Text Solution

    |

  14. The Standard electrode potentials of some electrodes are given below: ...

    Text Solution

    |

  15. The standarid potentiat of a cell. is measured as 1.1V: The,reaction o...

    Text Solution

    |

  16. The resistivity of a 0.8 M, solution of electrolyte is. 5 xx 10^-3, oh...

    Text Solution

    |

  17. The conductivity of 0: 20^prime M solution of K C l at 298 ~K is 0.024...

    Text Solution

    |

  18. Conductivity of 0.02 M, KCl solution is 0.002765 S cm^-1 . If th...

    Text Solution

    |

  19. The conductivity of 0.001028 mol L^-1 acetic acid is 4.95 xx 10^-5 Scm...

    Text Solution

    |

  20. Caleulate Lambdam^0 for acetic acid. Given that Lambdam^0(HCl)=426...

    Text Solution

    |