Home
Class 12
CHEMISTRY
Calculate pH of the half cell : Pt,H(2...

Calculate `pH` of the half cell `:`
`Pt,H_(2)(1 atm)|H_(2)SO_(4)" "E^(0)=-0.3V`

A

2

B

5

C

10

D

1

Text Solution

Verified by Experts

The correct Answer is:
B

`E_(2H^(o+)|H_(2))=-0.059pH`
`pH=(-0.3)/(-0.059)~~(0.3)/(0.06)~~5`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Solved Examples(Electrolysis And Electrolytic Cells)|12 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Ex 3.1 (Objective)|28 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Subjective|35 Videos
  • D AND F BLOCK ELEMENTS

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

    CENGAGE CHEMISTRY|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

Calculate EMF of the following half cells : a. Pt, H_(2)(2 atm)|HCl(0.02M)" "E^(c-)=0V b. Pt , Cl_(2)(10 atm)|HCl(0.1 M)" "E^(-c)=1.36V

Calculate the pH of the following half-cells solutions : (a) PtH_(2) ("1 atm")|H^(+) (HCl), " "E=0.25" volt" (b) PtH_(2) ("1 atm")|H^(+) (H_(2)SO_(4))," "E=0.3" volt"

Calculate e.m.f. of half cells given below : (a) {:(Pt_(2)),(4atm):}|{:(H_(2)SO_(4)),(0.02 M):} E_(OP)^(@) = 0 V (b) {:Fe:}|{:(FeSO_(4)),(0.2 M):} E_(OP)^(@) = 0.44 V (c) {:(Pt_(Cl_(2))),(10atm):}|{:(HCl),(0.02 M):} E_(OP)^(@) = -1.36 V

Calculate the reduction potential of the following electrodes : a. Pt,H_(2)(4 atm)|H_(2)SO_(4)(0.01M) b. Pt,H_(2)(1 atm)| HCl (0.2 M) c. Calculate the potential of hydrogen electrode in contact with a solution whose i pH=5" "ii. pOH=4

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)

Calculate the pH of the following half cells solutions and also the molarity of acids: {: (Pt_(H_(2))),(atm):}|{:H_(2)SO_(4):} " " E = 0.05 (b) {: (Pt_(H_(2))),(atm):}|{:HCl:} " " E = 0.1 V

The pH of LHE in the following cell is : Pt, H_(2)(1atm)|H^(o+)(x M)||H^(o+)(0.1M)|H_(2)(0.1atm)Pt E_(cell)=0.295V .

The potential of the following cell is 0.34 V at 25^(@)C calculate the standard reduction potential of the copper half cell Pt|H_(2)(1 atm)| H^(+)(1 M)||Cu^(2+)(1 M)|Cu

CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Solved Examples (Electrochemical Cell)
  1. Calculate EMF of the following half cells : a. Pt, H(2)(2 atm)|HCl(0...

    Text Solution

    |

  2. Calculate pH of the half cell : Pt,H(2)(1 atm)|H(2)SO(4)" "E^(0)=...

    Text Solution

    |

  3. A graph is plotted between E(cell) and log .([Zn^(2+)])/([Cu^(2+)]) . ...

    Text Solution

    |

  4. Given : NO(3)^(c-) rarrNO(2)( acidic medium ), " "E^(c-)=0.8V ...

    Text Solution

    |

  5. The standard potential of a cell using the reaction is 1.12. The heat...

    Text Solution

    |

  6. The standard potential of a cell using the reaction +3HgO(s)+2(overse...

    Text Solution

    |

  7. The EMF of the cell : Ag|AgCl,0.1 MKCl||0.1 M AgNO(3)|Ag is 0.45V. 0...

    Text Solution

    |

  8. Calculate the potential corresponding to the following cell. Given P...

    Text Solution

    |

  9. Estimate the standard reduction potential for the copper // copper sul...

    Text Solution

    |

  10. Knowing that K(sp) for AgCl is 1.0 xx 10^(-10), calculate E for a silv...

    Text Solution

    |

  11. Consider the following half reactions : PbO(2)(s)+4H^(o+)(aq)+SO(4)...

    Text Solution

    |

  12. The EMF of the cell Ag|0.1(N)AgNO(3)||1(N) KBr, AgBr(s)|Ag was found...

    Text Solution

    |

  13. For the cell Zn|ZnCl(2)(m)|AgCl,E is 1.24V at 25^(@)C and 1.260V at 35...

    Text Solution

    |

  14. A saturated calomel electrode is coupled through a salt bridge with a ...

    Text Solution

    |

  15. Two weak acid solutions HA(1) and HA(2) with the same concentration an...

    Text Solution

    |

  16. Find the solubility of AgCl in 0.1 M CaCl(2). E^(c-).(Ag^(o+)|Ag)=0.79...

    Text Solution

    |

  17. The EMF of the cell : Ag|Ag(2)CrO(4)(s),K(2)CrO(4)(0.1 M)||AgNO(3)(0...

    Text Solution

    |

  18. The EMF of a galvanic cell Pt|H(2)(1 atm)|HCl(1M)|Cl(2)(g)|Pt is 1.29V...

    Text Solution

    |

  19. Calculate the potential of silver electrode in a saturated solution of...

    Text Solution

    |

  20. A solution of Fe^(2+) is titrated potentiaometrically using Ce^(4+) so...

    Text Solution

    |