Home
Class 11
CHEMISTRY
Statement : The dissociation constants o...

Statement : The dissociation constants of polyrotic acid are in the order `K_(1)gtK_(2)gtK_(3)`.
Explanation : The `[H^(+)]` furnished in first step of dissociation exerts common ion effect to reduce the secend dissociation so on.

A

S is correct but E is wrong.

B

S is wrong but E is correc.

C

Both S and E are correct and E is correct explanation of S.

D

Both S and E are correct but E is correct explanation of S.

Text Solution

Verified by Experts

The correct Answer is:
C
Explanation is correct reason for statement.
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    P BAHADUR|Exercise Exercise7|33 Videos

  • GASEOUS STATE

    P BAHADUR|Exercise Exercise -9|1 Videos

  • MOLE AND EQUIVALENT CONCEPT

    P BAHADUR|Exercise Exercise 9 Advanced numerical problems|61 Videos

Similar Questions

Explore conceptually related problems

Assertion :- The dissocation constant of poly basic acid are in order K_(1)gtK_(2)gtK_(3) . Reason :- The H^(+) ion furnished in first step of dissocation exert common ion effect to reduce the second dissociation and soon.

Statement: The dissociation constant of water at 60^(@)C is 10^(-13) . Explanation: The pH of water is 6.5 and that it behaves as acid at 60^(@)C .

K_1 and K_2 are the first and second dissociation constants of oxalic acid. Choose the correct statement –

The dissociation constant of two weak acids are k_(a_(1)) & k_(a_(2)) respectively. Their relative strength is -

If the dissociation constants of two substances are K_(1) " and " K_(2) respectively , then the ratio of degree of dissociation for a given concentration , is given by

The dissociation constant of a weak monobasic acid K_(a) is 1xx 10^(-5) . The pH of 0.1 M of that acid would be

If the dissociation constants of two weak acids HA_(1) and HA_(2) are K_(1) and K_(2) , then the relative strengths of HA_(1) and HA_(2) are given by

The acid dissociation constant of uric acid is K_(a)=4.0xx10^(-6) M. The pH of a sample of urine is 6.0. What is the ratio of concentration of urate ion to uric acid in the urine?

Statement: The acidic nature of some cations is: B^(3+)gtBe^(2+)gtNa^(+)gtK^(+) Explanation: More is the effective nuclear charge on cation more is its acidic nature.

The acid dissociation constant K_(a) of acetic acid is 1.74 xx 10^(-5) at 298 K. The pH of a solution of 0.1 M acetic acid is

Knowledge Check

  • Assertion :- The dissocation constant of poly basic acid are in order K_(1)gtK_(2)gtK_(3) . Reason :- The H^(+) ion furnished in first step of dissocation exert common ion effect to reduce the second dissociation and soon.

    A
    If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
    B
    If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
    C
    If Assertion is True but the Reason is False.
    D
    If both Assertion & Reason are False

  • Statement: The dissociation constant of water at 60^(@)C is 10^(-13) . Explanation: The pH of water is 6.5 and that it behaves as acid at 60^(@)C .

    A
    S is correct but E is wrong.
    B
    S is wrong but E is correc.
    C
    Both S and E are correct and E is correct explanation of S.
    D
    Both S and E are correct but E is correct explanation of S.

  • K_1 and K_2 are the first and second dissociation constants of oxalic acid. Choose the correct statement –

    A
    `K_(2)" is equal to "K_(1)`
    B
    `K_(2)" is equal to 1000 times "K_(1)`
    C
    `K_(2)" is equal to "1/1000" times "K_(1)`
    D
    All of the above
    • P BAHADUR-IONIC EQUILIBRIUM-Exercise
    1. Statement : The dissociation constants of polyrotic acid are in the or...

      Text Solution

      |

    2. Statement: All strong acids in water show almost almost same acidic na...

      Text Solution

      |

    3. Statement: CCI(4),C(6)H(6) and liquid SO(2) are aprotic solvents. Ex...

      Text Solution

      |

    4. Statement: The acidic nature of some cations is: B^(3+)gtBe^(2+)gtNa^(...

      Text Solution

      |

    5. Statement: Acidic nature of boron trihalides is in the order BF(3)ltBC...

      Text Solution

      |

    6. Statement: CO+NaOH overset("High"P)underset("High"T)rarr HCOONa Expl...

      Text Solution

      |

    7. Statement: The dissociation constant of water at 60^(@)C is 10^(-13). ...

      Text Solution

      |

    8. Assertion : Salting out action of sodium soap in presence of NaCl is b...

      Text Solution

      |

    9. Statement: Hydrolysis of salt is an exothermic phenomenon. Explanati...

      Text Solution

      |

    10. Statement: The pH of an aqueous solution of acetic acid remains unchan...

      Text Solution

      |

    11. Statement: In acidic medium, Zn^(2+) is not precipitated by H(2)S. E...

      Text Solution

      |

    12. Statement: Sodium carbonate can be titrated against sulphuric acid by ...

      Text Solution

      |

    13. Statement: In an acid-basic titration involving a strong base and a we...

      Text Solution

      |

    14. Assertion (A): Equivalent conductance increase with dilution for an el...

      Text Solution

      |

    15. Statement: A micture of the solution of a weak acid and its conjugates...

      Text Solution

      |

    16. Statement: For a weak electrolyte, the plot of molar conductivity (Lam...

      Text Solution

      |

    17. Statement: The addition of a small amount of a 'neutral' electrolyte (...

      Text Solution

      |

    18. Statement: In water, orthoboric acid behaves as a weak monobasic acid....

      Text Solution

      |

    19. Prove that degree of dissocation of a weak acid is given by: alpha= ...

      Text Solution

      |

    20. The concentration of fluroacetic acid (K(a)of acid =2.6xx10^(-3)), whi...

      Text Solution

      |