Home
Class 12
CHEMISTRY
Assertion : During adsorption, DeltaG, D...

Assertion : During adsorption, `DeltaG, DeltaH and DeltaS` decrease i.e., their values become negative.
Reason : Adsorption is a spontaneous process. Randomness ofr disorder decreases during adsorption.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If assertion and reason both are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
A
Reason is the correct explanation for assertion.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    DINESH PUBLICATION|Exercise BRAIN STORMING MULTIPLE CHOICE QUESTIONS (MCQs)|8 Videos

  • SURFACE CHEMISTRY

    DINESH PUBLICATION|Exercise MULTIPLE CORRECT OPTIONS TYPE MCWs|15 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|20 Videos

  • THE CARBON FAMILY

    DINESH PUBLICATION|Exercise Ultimate|11 Videos

Similar Questions

Explore conceptually related problems

Assertion : For adsorption DeltaG, DeltaH, DeltaS all have –ve values Reason : Adsorption is a spontaneous exothermic process in which randomness decreases due to force of attraction between adsorbent and adsorbate.

(A) For adsorption DeltaG , DeltaS , and DeltaH all have negative value. (R) Adsorption is a spontanous process accompained by decrease in randomness.

Assertion : In physisorption, adsorption decreases with increase in tempetrature. Reason : Lhysisorption is of eothermic nature.

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMEN1: For Adsorption DeltaG,DeltaH,DeltaS all have -ve values. STATEMENT-2: Adsoption is a exothermic process in which randomness decreases due to force of attraction between adsorbent and adsorbate.

Amongst the following statements regarding adsorption, those that are valid are : (a) DeltaH becomes less negative as adsorption proceeds. (b) On a given adsorbent, ammonia is adsorbed more than nitrogen gas. (c) On adsorption, the residual force acting along the surface of the adsorbent increases. (d) With increase in temperature, the equilibrium concentration of adsorbate increases.

Which of the following is true during adsorption? a. DeltaG , DeltaH , and DeltaS all are negative. b. DeltaG is negative, but DeltaH and DeltaS is positive. c. DeltaG and DeltaH are negative, but DeltaS is positive. d. DeltaG and DeltaS are negative, but DeltaH is positive.

DINESH PUBLICATION-SURFACE CHEMISTRY -ASSERTIN-REASON TYPE QUESTIONS
  1. Assertion : A colloidal sol of Al(OH)(3) is more readly coagulated by ...

    Text Solution

    |

  2. Assertion : A sol of As(2)S(3) prepared by the action of H(2)S on As(2...

    Text Solution

    |

  3. Assertion : Physical adsorption on the surface of sadsorbent equires a...

    Text Solution

    |

  4. Assertion : Aqueous gold colloidal sol is red in colour. Reason : Th...

    Text Solution

    |

  5. Assertion : Fe^(3+) ions can be used for the coagulation of As(2)S(3) ...

    Text Solution

    |

  6. Assertion : In the presenced of promote, the activity on the surface o...

    Text Solution

    |

  7. Assertion : A colloidal sol. Of Fe(OH)(3) formed by peptisation carrie...

    Text Solution

    |

  8. Assertion : Proteins, starch and rubber are lyophilic coloids. Rea...

    Text Solution

    |

  9. Assertion : Lyophilic colloids such as starch, gelatin etc, act as pro...

    Text Solution

    |

  10. Assertion : The micelle formed by sodium stereate in water has -COO^(-...

    Text Solution

    |

  11. Assertion : Sulphide ores are concentrated by forth flotation process....

    Text Solution

    |

  12. Assertion : Colloidal solutions are electrically netural Reason : Di...

    Text Solution

    |

  13. Assertion : During adsorption, DeltaG, DeltaH and DeltaS decrease i.e....

    Text Solution

    |

  14. Assertion : Al^(3+) ions have greater precipitating power for As(2)S(3...

    Text Solution

    |

  15. Assertion : Oxidation of Na(2)SO(3) is not caused by air but in the pr...

    Text Solution

    |

  16. Assertion : A catalyst lowers the threshold energy level for a react...

    Text Solution

    |

  17. Assertion : Gelatin is often used as a protective colloid. Reason : ...

    Text Solution

    |

  18. Assertion : The concentration of sulphide ore by froth floatation proc...

    Text Solution

    |

  19. Assertion : Physical adsorption is reversible. Reason : Chemical ads...

    Text Solution

    |

  20. Assertion : Fe(OH)(3) and As(2)S(3) colloidal sols on micing fro preci...

    Text Solution

    |