Home
Class 12
CHEMISTRY
Four colourless salt solutions are place...

Four colourless salt solutions are placed in separate test tubes and a strip of copper is placed in each. Which solution finally turns blue?

A

`Pb(NO_(3))_(2)`

B

`Zn(NO_(3))_(2)`

C

`AgNO_(3)`

D

`Cd(NO_(3))_(2)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 ( Nernst equation)|14 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 ( Batteries)|1 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1 ( Galvanic cells)|16 Videos

  • DILUTE SOLUTIONS

    AAKASH SERIES|Exercise EXERCISE - 1.2|55 Videos

  • ELEMENTS OF D - BLOCK

    AAKASH SERIES|Exercise EXERCISE - 5.2|33 Videos

Similar Questions

Explore conceptually related problems

Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution turn blue.

FeCl_(3) on reaction with K_(4)[Fe(CN)_(6)] in aqueous solution gives a blue colour . These two solutions are separated by a semipermeable membrane as shown in the figure . Both the solutions are sufficiently dilute & osmosis will take place as there is a difference in concentration of the solutions. Imagine the experiment is carried out at 27^(@)C . The osmotic flow will take place in onedirection and not in both . Which of the following observations may be recorded after a while ?

FeCl_(3) on reaction with K_(4)[Fe(CN)_(6)] in aqueous solution gives a blue colour . These two solutions are separated by a semipermeable membrane as shown in the figure . Both the solutions are sufficiently dilute & osmosis will take place as there is a difference in concentration of the solutions. Imagine the experiment is carried out at 27^(@)C . The osmotic flow will take place in onedirection and not in both . The osmotic pressure (pi) of FeCl_(3) Solution can expressed as

Which ions can be tested in a solution of Mohr's salt?

The iron nail dipped in Copper Sulphate solution becomes brown and the blue colour of the Copper Sulphate solution fades. Which type of reaction is this ?

Bottles containing C_6H_5I and C_6H_5CH_2I lost their original labels. They were separately taken in test tubes and boiled with NaOH solution . The end solution in each tube was made acidic with dilute HNO_3 and some AgNO_3 solution added. Solution B gave an yellow precipitate. Which one of the following statement is true for the experiment ?

Take solutions of some juices of fruits, vegetables, cold drinks and various solutions in beakers test tubes and test them with blue and red litmus papers. List out results in the table, by marking (?) in the relevant column if the colour changes, put (?) if the colour is unchanged.

Place a few granules of Zn metal in one test tube and add 10 ml of NaOH solution. What is the observation ?

Electrolysis is the process in which electrical energy is converted to chemical energy. In electrolyte cell, oxidation takes place at anode and reduction at cathode. Electrode process depends on the electrode taken for electrolysis. Amount of substance liberated at an electrode is directly proportionation to the amount of charge passed through it. The mass of substance liberated at electrode is calculate using the following realation : m=(itE)/(96500) Here, E represent the equivalent mass and 96500 C is called the faraday constant. Faraday (96500 C) is the charge of 1 mole electron i.e., 6.023 xx 10^(23) electrons, it is used to liberate on gram equivalent of the substance. The platinum electrodes were immersed in a solution of cupric sulphate (CuSO_4) and electric current is passed through the solution. After sometimes, it was observed that the colour of copper sulphate disappeared with evolution of a gas at the electrode. The colourless solution contains.

What happens when a solution of an acid is mixed with a solution of a base in a test tube ? The temperature of the solution increases The temperaure of the solution decreases The temperature of the solution remains constant Salt formation takes place

AAKASH SERIES-ELECTROCHEMISTRY -OBJECTIVE EXERCISE - 1 ( Electrode potentials and EMF)
  1. {:(" LIST - 1 ", " LIST - 2 "),( "A) Very dilute " H(2)...

    Text Solution

    |

  2. Standard reduction electrode potential of three metals A, B and C are ...

    Text Solution

    |

  3. The difference of potential of two electrodes in a galvanic cell is kn...

    Text Solution

    |

  4. Standard reduction electrode potential of three metals A, B and C are ...

    Text Solution

    |

  5. Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because

    Text Solution

    |

  6. The standard reduction potentials at 298 K for the following half cell...

    Text Solution

    |

  7. When Zn piece is kept in CuSO4 solution, copper gets precipitated beca...

    Text Solution

    |

  8. Beryllium is placed above magnesium in the Il group. When beryllium du...

    Text Solution

    |

  9. For I2 + 2e to 2I^(-) , standard reduction potential = + 0.54 volt. Fo...

    Text Solution

    |

  10. Which of the following reactions are not feasible?

    Text Solution

    |

  11. E^(@) for Fe^(2+) + 2e to Fe is -0.44 V , E^(@) for Zn^(2+) + 2e to ...

    Text Solution

    |

  12. Based on the data given below , the correct order of reducing power i...

    Text Solution

    |

  13. The S.R.Ps of Cu^(2+) // Cu , Hg^(2+)//Hg and Zn^(2+)//Zn are respecti...

    Text Solution

    |

  14. For the cell prepared from electrod A , Cr2O7^(2-) |Cr^(3+) , E("red"...

    Text Solution

    |

  15. Standared electrode potential of two half-reactions are given below : ...

    Text Solution

    |

  16. The E(M^(3+)|M^(2+))^(0) values for Cr, Mn, Fe and Co are -0.41, +1.57...

    Text Solution

    |

  17. The standard reduction potentials of Zn and Ag in water at 298 K are,...

    Text Solution

    |

  18. A student made the following observations in the laboratory, A) Cl...

    Text Solution

    |

  19. For the electrochemical cell M// M^(+) // // X^(-) // X , E^(0) M^(+)...

    Text Solution

    |

  20. Four colourless salt solutions are placed in separate test tubes and a...

    Text Solution

    |