Home
Class 12
CHEMISTRY
A spoon to be electroplated with gold sh...

A spoon to be electroplated with gold should be placed at:

A

cathode

B

anode

C

electrolyte

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A

Standard Electrode potential for Gold is
`Au^(3+) + 3e^(-) hArr Au_(r)`
is 1.50 volt. Therefore, gold get easily reduced. So to electroplate gold on the spoon, spoon should be made cathode as reduction takes place on cathode.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2000

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos
  • AIIMS 2002

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

A spoon having 10cm ^(2) area is to be electroplated with silver .Calcalate the thick - ness of silver coating when a currect of 0.12 A is passed for 48 h through the electrolye .Electrochmical equivlent of silver is 0.001118 gC^(-1) and density is 10.5 gcm^(-3)

What is electroplating ?

When a metal is electroplated with silver (Ag)

Metal used in electroplating is

Why hydrogen should be placed in group I ?

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2001-CHEMISTRY
  1. To pH value of decinormal solution of NH(4)OH which is 20% ionised is

    Text Solution

    |

  2. The compsition of carnalite is

    Text Solution

    |

  3. A spoon to be electroplated with gold should be placed at:

    Text Solution

    |

  4. Which of the following option w.r.t. increasing bond order is correct ...

    Text Solution

    |

  5. A solid AB has NaCl structure. If the radius of the cation A is 100 pm...

    Text Solution

    |

  6. Correct equation of Freundrich iostherm is

    Text Solution

    |

  7. Crystalline solids have

    Text Solution

    |

  8. The number of electrons delivered at the cathode during electrolysis b...

    Text Solution

    |

  9. In which of the following reaction K(p) gt K(c)

    Text Solution

    |

  10. The IUPAC name of the compound having the formula "CC"l(3)CH(2)CHO is

    Text Solution

    |

  11. Which of the following molecules or ions is a bidentate ligand ?

    Text Solution

    |

  12. The "mole"s of electrons required to deposit 1 gm equivalent aluminium...

    Text Solution

    |

  13. Which of the following is a characteristic of a reversible reaction ?

    Text Solution

    |

  14. What volume of NH(3) gas at STP would be needed to prepare 100 ml of 2...

    Text Solution

    |

  15. The equilibrium constant of a reaction is 300, if the volume of the re...

    Text Solution

    |

  16. Which of the following is the correct squence of atomic weights of giv...

    Text Solution

    |

  17. The aqueous solution of which of the following salt will have the lowe...

    Text Solution

    |

  18. Which of the following alkanes is optically active ?

    Text Solution

    |

  19. A solution with pH=2 is more acidic than one with a pH =6 , by a facto...

    Text Solution

    |

  20. Vapour pressure of benzene at 30^(@)C is 121.8 mm. When 15 g of a non-...

    Text Solution

    |