Home
Class 12
CHEMISTRY
H(2)S is a stronger acid than H(2)O. Exp...

`H_(2)S` is a stronger acid than `H_(2)O`. Explain

Text Solution

Verified by Experts

Hydrogen sulphide `(H_(2)S)` is a stronger acid `(K_(a)=1.0xx10^(-7))` than water `(K_(a)=1.0xx10^(-14))` because S-H bond is longer than O-H bond. Its bond dissociation enthalpy is therfore, less as compared to that of O-H bond in `H_(2)O`.
Promotional Banner

Topper's Solved these Questions

  • THE P-BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise N.C.E.R.T In-Text Questions|34 Videos

  • THE P-BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise N.C.E.R.T. Exercise|40 Videos

  • THE P-BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise Problem 3|1 Videos

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise PREPARATORY PACKAGE|14 Videos

Similar Questions

Explore conceptually related problems

Assertion : H_(2)S is stronger acid than PH_(3) . Reason : S is more electronegative than P, conjugate base HS^(− ) is more stable than H_(2)P^(−) .

In hypophosphorous acid P is in +1 state (H_(3)PO_(2)) and in phosphoric acid (H_(3) PO_(4)) Pis in +5 state but still H_(3)PO_(2) is stronger than H_(3)PO_(4) . Explain.

Assertion : H_(2)O_(2) decomposes carbonates and bicarbonates to evolve CO_(2) gas. Reason : H_(2)CO_(3) is stronger acid than H_(2)O_(2) .

H_(2)S is. more acidic than H_(2)O because

(a) Draw the structures of the following molecules : (i) N_(2)O_(5) (ii) HCIO_(4) (b) Explain the following observations : (i) H_(2)S is more acidic than H_(2)O . Fluorine does not exhibit any positive oxidation state . (iii) Helium forms no real chemical compound.

DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Concept Based Questions
  1. Bond angle in H(2)S is lower than in H(2)O. Justify.

    Text Solution

    |

  2. Hydrogen sulphide cannot be dried by passing through conc. H(2)SO(4) ....

    Text Solution

    |

  3. H(2)S is a stronger acid than H(2)O. Explain

    Text Solution

    |

  4. Sulphur vapours exhibit some paramagnetic behaviour. Explain.

    Text Solution

    |

  5. SF(6) is not easily hydrolysed whereas SF(4) can be. Assign reason.

    Text Solution

    |

  6. Bond dissociation enthalpy of F-F bond is less than that of Cl-Cl bond...

    Text Solution

    |

  7. Sulphur disappears when boiled with aqueous solution of sodium sulphit...

    Text Solution

    |

  8. Chlorine water has both oxidising as well as bleaching properties ? Ex...

    Text Solution

    |

  9. Oxygen molecule has the formula O(2) while sulphur is S(8). Why ?

    Text Solution

    |

  10. Why is H(2)S less acidic than H(2)Te ?

    Text Solution

    |

  11. Why does burning Mg continue to burn in a jar containing NO but burnin...

    Text Solution

    |

  12. Reducing character decreases from SO(2) " to " TeO(2). Explain.

    Text Solution

    |

  13. Why is iodine more soluble in KI solution than in water ?

    Text Solution

    |

  14. Iodine is liberated in the reaction between KI and CU^(2+) ions but ch...

    Text Solution

    |

  15. Lithium fluroide (LiF) is mainly ionic but lithium iodide (LiI) is cov...

    Text Solution

    |

  16. Interhalogen compounds are more reactive than halogens. Why ?

    Text Solution

    |

  17. ClF(3) exists but FCl(3) does not. Why ?

    Text Solution

    |

  18. Ferric iodide is very unstable but ferric chloride is stable. Explain.

    Text Solution

    |

  19. HF is not stored in glass bottles but is kept in wax bottles. Assign r...

    Text Solution

    |

  20. KHF(2) is a well known compound whereas KHCl(2) does not exist. Why ?

    Text Solution

    |