Home
Class 12
CHEMISTRY
Given the standard reduction potentials,...

Given the standard reduction potentials, which statement is correct?
`{:(Cu^(2)(aq) + 2e^(-) rightarrow Cu(s), E^(@) = 0.34V), (2H^(+)(aq) + 2e^(-) rightarrow H_(2)(g), E^(@)= 0.0V), (Cr^(3+)(aq) + 2e^(-) rightarrow Cr(s),E^(@) = -0.73V):}`

A

Cr(s) will react with acid.

B

Cu(s) will react with acid.

C

`Cu^(2+)(aq)` will react with acid

D

Cu(s) will reacct with `Cr^(3+)(aq)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTY

    GRB PUBLICATION|Exercise Latimer Diagram, concentration cells|117 Videos

  • ELECTROCHEMISTY

    GRB PUBLICATION|Exercise Batteries|10 Videos

  • ELECTROCHEMISTY

    GRB PUBLICATION|Exercise Subjective type|39 Videos

  • D-BLOCK ELEMENTS

    GRB PUBLICATION|Exercise Subjective Type|18 Videos

  • ENVIRONMENTAL CHEMISTRY

    GRB PUBLICATION|Exercise Straight objective type|40 Videos

Similar Questions

Explore conceptually related problems

Given these standard reduction potentials, what is the standard reduction potential for Co^(3+)(aq) + 3e^(-) rightarrow Co(s) ? Co^(3+)(aq) + e^(-) rightarrow Co^(2+)(aq) E^(@) = 1.82V Co^(2+)(aq) + 2e^(-) rightarrow Co(s) E^(@) = -0.28V

According to the standard reduction potentials: Pb^(2+)(aq) + 2e^(-) rightarrow Pb(s) E^(@) = -0.13V Fe^(2+)(aq) + 2e^(-) rightarrow Fe(s) E^(@) = -0.44 Zn^(2+)(aq) + 2e^(-) rightarrow Zn(s) E^(@) = -0.76V Which species will reduce Mn^(3+) to Mn^(2+) [E^(@) = 1.51V but will NOT reduce Cr^(3+) to Cr^(2+) [E^(@) = -0.40V]

Which of the half reactions, when coupled, will make a galvanic cell that will produce the largest voltage under standard conditons? P. Cu^(2+)(aq) + 2e^(-) rightarrow Cu(s) E^(@) = +0.34V Q. Pb^(2+)(aq) + 2e^(-) rightarrow Pb(s) E^(@) = -0.13V R. Ag^(+)(aq) + 3e^(-) rightarrow Al(s) E^(@) = -1.66V

Use the standard reduction potentials: Sn^(2+)(aq) + 2e^(-) rightarrow Sn(s) E^(@) = -0.141V Ag^(+)(aq) + e^(-) rightarrow Ag(s) E^(@) = 0.800V To calcultate E^(@) for the reaction: Sn(s) + 2Ag^(+)(aq) rightarrow Sn^(2+)(aq) + 2Ag(s)

Cu^(+) + e^(-) rightarrow Cu , E^(@) = x1volt , Cu^(2+) + 2e^(-) rightarrow Cu , E^(@) = x_(2) volt, then for Cu^(2+) + e^(-) rightarrow Cu^(+), E^(@) (volt) will be :

Given the two standard reduction potentials below, what is the K_(sp) of Ag_(2)CrO_(4) at 25^(@)C ? Ag_(2)CrO^(4)(s) + 2e^(-) rightarrow 2Ag(s) + CrO_(4)^(2-)(aq) E^(@)= + 0.446V Ag^(+)(aq) + e^(-) rightarrow Ag(s) E^(@) = +0.799V

Given these standards reduction potentials, what is the free energy change (in kJ. Mol^(-) for the reaction: Pb(s) + 2Ag^(+)(aq) rightarrow Pb^(2+)(aq) + 2Ag(s) Ag^(+)(aq) + e^(-) rightarrow Ag(s) E^(@) = 0.80V Pb^(2+)(aq) + 2e^(-) rightarrow Pb(s) E^(@) = -0.13V

According to the reductions potentials in the table below, which statements is true under standard conditions? {:("Reaction", E^(@)V), (L^(2+) + 2e^(-) rightarrow L, -0.13), (M^(2+) + 2e^(-) rightarrow M, -0.44),(N^(2+) + 2e^(-) rightarrow N, -0.76):}

For the reduction of NO_(3)^(-) ion in an aqueous solution, is +0.96V. Values of for some metal ions are given below : V^(2+)(aq)+ 2e^(-)rightarrowV , E^(@)= -1.19V Fe^(3+)(aq)+ 3e^(-) rightarrow Fe , E^(@) = -0.04 V Au^(3+)(aq) + 3e^(-) rightarrow Au , E^(@) = +1.40V Hg^(2+) (aq)+ 2e^(-) rightarrowHg , E^(@) = + 0.86 V The pair(s) of metals that is(are) oxidised by NO_(3)^(-) in aqueous solution is(are) :

GRB PUBLICATION-ELECTROCHEMISTY-Galvanic Cell and Salt Bridge
  1. Consider the following reactions: X(NO(3)(2) + Y rightarrow X + Y(NO...

    Text Solution

    |

  2. When connected to a Standard Hydrogen Electrode (SHE) electrons flow f...

    Text Solution

    |

  3. Given these standards reduction potentials, what is the free energy ch...

    Text Solution

    |

  4. Given the standard reduction potentials, which statement is correct? ...

    Text Solution

    |

  5. In a galvanic cell in which the following spontaneous reaction takes p...

    Text Solution

    |

  6. For a galvanic cell involving the half-reaction at standard conditions...

    Text Solution

    |

  7. According to the half-reaction table, Sn^(2+) + 2e^(-) rightarrow Sn...

    Text Solution

    |

  8. The reduction potentials for the +2 cations, e.g. A^(2+) + 2e^(-) ri...

    Text Solution

    |

  9. E^(@) = 0.93V for the reactions: Fe(s) + 2M^(+)(aq) rightarrow Fe^(2...

    Text Solution

    |

  10. In the galvanic cell shown below, which arrow indicates the spontaneou...

    Text Solution

    |

  11. What is the standard cell potential for the voltaic cell? Cr || Cr^(...

    Text Solution

    |

  12. What is the E^(@) value for the voltaic cell constructed from the half...

    Text Solution

    |

  13. Based on the reactions and data below, which reaction is least spontan...

    Text Solution

    |

  14. Use the standard reduction potentials: Sn^(2+)(aq) + 2e^(-) rightarr...

    Text Solution

    |

  15. What is the standard cell potential for the reaction, 2Cr(s) + 3Sn^(...

    Text Solution

    |

  16. Which is the weakest oxidizing agent in a 1 M aqueous solution?

    Text Solution

    |

  17. Consider the cell potentials E(Mg^(2+)|Mg)^(0)=-2.37V and E(Fe^(3+)|Fe...

    Text Solution

    |

  18. Use the E^(@) values in the table above to the determining which of th...

    Text Solution

    |

  19. According to the equations and data in the table above, which species ...

    Text Solution

    |

  20. According to the standard reduction potentials above, cathodic protect...

    Text Solution

    |