Home
Class 12
CHEMISTRY
Why is sulfurous acid a reducing agent ?...

Why is sulfurous acid a reducing agent ?

Text Solution

Verified by Experts

Oxidation number of sulfur in sulfurous acid `(H_2SO_3)` is +4 which is less than its maximum oxidation state of +6. Since, oxidation state of sulfur can be increased from +4 to +6, `H_2SO_3` acts as a reducing agent.
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)|67 Videos

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(LONG ANSWER QUESTIONS)|65 Videos

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-I)(MATCH THE FOLLOWING)|1 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    ICSE|Exercise ISC EXAMINATION QUESTIONS ( PART-II DESCRIPTIVE QUESTIONS)|33 Videos

  • POLYMERS

    ICSE|Exercise ISC EXAMINATION QUESTIONS |10 Videos

Similar Questions

Explore conceptually related problems

State True or False : sulphurous acid acts as a reducing agent

CO is used as a reducing agent .

Why is sulfuric acid not used during the reaction of alcohols in the conversion of an alcohol to the alkyl iodide?

Weakest reducing agent:

Hydrogen is used as a reducing agent.

Why does H_(2)O_(2) act both as an oxidising and a reducing agent?

Which oxide of sulfur can act as an oxidising as well as a reducing agent ?

Potassium permanganate is used as a ul"reducing agent" in acidic medium.

Why Eu^(2+) and Yb^(2+) ions in solutions are good reducing agents but an aqueous solution of Ce^(4+) is a good oxidising agent?

ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Write the structural formula of PCl5(s).

    Text Solution

    |

  2. What type of hybridization is involved in PCI5 ?

    Text Solution

    |

  3. Why is sulfurous acid a reducing agent ?

    Text Solution

    |

  4. Why do hydrides of oxygen and sulfur differ in physical state?

    Text Solution

    |

  5. Which halogen has highest value of electron gain enthalpy?

    Text Solution

    |

  6. Write the chemical equation for the following: Ca(3)(PO4)2 + SiO(2) ...

    Text Solution

    |

  7. Why is nitrous acid oxidant as well as reductant ?

    Text Solution

    |

  8. Which is least basic ? SbH(3)PH3,NH3,AsH3

    Text Solution

    |

  9. Draw the structure of XeF(2)

    Text Solution

    |

  10. Among the noble gases only xenon is well known to form chemical compou...

    Text Solution

    |

  11. Assign reason for the following: In solid state, PCI5 , behaves as an ...

    Text Solution

    |

  12. Are all the five bonds in PCl(5) molecule equivalent? Justify your ans...

    Text Solution

    |

  13. Complete the following reactions : (i) P4 + SOCl2 rarr

    Text Solution

    |

  14. Complete the following reactions : (ii) CH3COOH + PCl5 rarr

    Text Solution

    |

  15. What happens when (write balanced chemical equations): Ammonia is ...

    Text Solution

    |

  16. In which one of the two structures, NO(2)^(+) and NO(2)^(-) the bond a...

    Text Solution

    |

  17. Why is the bond angle in PH(3) molecule lesser than that in NH(3) mole...

    Text Solution

    |

  18. Answer the following : (i) Which neutral molecule would be isoelectr...

    Text Solution

    |

  19. Why is Bi(V) a stronger oxidant than Sb(V) ?

    Text Solution

    |

  20. Why is red phosporus less reactive than white phosphorus?

    Text Solution

    |