Home
Class 12
CHEMISTRY
Assertion: For arsenic sulphide sol, BaC...

Assertion: For arsenic sulphide sol, `BaCl_(2)` has higher coagulation value than `NaCl`
Reason : Higher the valency of the oppoistively charged ion of the electrolyte added, higher is the coagulating power of the electrolyte.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct assertion: For negatively charged `As_(2)S_(3)` sol, `BaCl_(2)` has lower coagulation value (or higher coagulation power) than `NaCl`.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    A2Z|Exercise Assertion-Reasoning Questions|6 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Colloids (Properties, Coagulation, Protection, Emulsions And Applications)|30 Videos

  • SOLUTIONS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Greater the valency, the higher is the coagulating power of ion.'This rule was inroduced by

Al(NO_3) has higher coagulating power then MgSO_4 for Fe(OH)_3 sol.

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. coagultion value propto = 1/("coagulating power") the coagulation values of differnt electrolytes are different . this behavious can be easily uderstood by Harby - schulze rule which states. the greater is the valency of the effective ion grreater is its coagulating power," which one had the highest coagulating powe?

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As_(2)S_(3) are given : I (NaCl) = 52, their coagulating power is

Assertion : For a negatively charged sol., the coagulation value of NaCl and MgCl_2 are 52.0 and 0.72 respectively. Reason : Greater charge of cation causes slower coagulation.

Assertion:SiC has higher melting point than NaCl. Reason: SiC has stronger electrostatic forces of attraction.

A2Z-SURFACE CHEMISTRY-AIIMS Questions
  1. Assertion: A sol of As(2)S(3) prepared by the action of H(2)S on As(2)...

    Text Solution

    |

  2. Assertion: The property of adsorption is shown by solids to a much lar...

    Text Solution

    |

  3. Assertion: For arsenic sulphide sol, BaCl(2) has higher coagulation va...

    Text Solution

    |

  4. Assertion: Tetraethyl lead minimises the knocking effedct when mixed w...

    Text Solution

    |

  5. Assertion (A): Micelles are formed by surfactant molecules above the c...

    Text Solution

    |

  6. Assertion: Isoelectric point is pH at which colloidal can move towards...

    Text Solution

    |

  7. Assertion: Lyophilic colloids are more stable than lyophobic colloids....

    Text Solution

    |

  8. Assertion(A): Langmuir adsorption is a single-layer phenomenon. Reas...

    Text Solution

    |

  9. Assertion: A gas with higher critical temperature gets adsorbed to mor...

    Text Solution

    |

  10. Assertion(A): Activity of an enzyme is pH dependent. Reason(R): Chan...

    Text Solution

    |

  11. Assertion: When AgNO(3) is treated with excess of Kl, colloidal partic...

    Text Solution

    |

  12. Assertion: Colloidal solution exhibit Tyndall effect while true soluti...

    Text Solution

    |

  13. Assertion: Alcohols are dehydrated to hydrocarbons in the presence of ...

    Text Solution

    |

  14. Assertion: Physisorption of molecules occures on surface only. Reaso...

    Text Solution

    |

  15. Assertion: Medicines in the colloidal state are more effective. Reas...

    Text Solution

    |

  16. Assertion: Fe^(3+) can be used for coagulation of As(2)S(3) sol. Rea...

    Text Solution

    |

  17. Non-electrolyte colloidal surfactants is

    Text Solution

    |

  18. Which of the following forms cationic micelles above certain concentra...

    Text Solution

    |

  19. If x is the amount of adsorbate and m is the amount of adsorbent, whic...

    Text Solution

    |

  20. The Langmuir adsorption isotherm is deduced using the assumption.

    Text Solution

    |