Home
Class 11
CHEMISTRY
State as to why (a) a solution of Na(2...

State as to why
(a) a solution of `Na_(2)CO_(3)` is alkaline ?
(b) alkali metals are prepared by electrolysis of their fused chlorides?
(c) sodium is found to be more useful than potassium ?

Text Solution

Verified by Experts

Sodium carbonate (`Na_2CO_3`) is a salt of weak acid (`H_2CO_3`) and strong base (NaOH).
Promotional Banner

Topper's Solved these Questions

  • SELF ASSESSMENT PAPER 03

    ICSE|Exercise Questions|69 Videos

  • SELF ASSESSMENT PAPER 05

    ICSE|Exercise QUESTIONS |37 Videos

Similar Questions

Explore conceptually related problems

Sodium is found more useful than potassium ? Explain.

An aqueous solution of Na_2CO_3 is alkaline ? Explain.

Why can we not use an aqueous solution of sodium chloride to isolate sodium metal by electrolysis ?

Why is only molten salt used for the electrolysis of a very active metal like sodium or potassium ?

Alkali &alkaline earth metals have low ionisation enthalpies and hence exhibit characteristic flame colouration. They have high negative electrode potentials & hence are strong reducing agents. It dissolve in liquid ammonia to give a solution which conducts electricity and act as strong reducing agent. being stronger reducing agent than hydrogen, they are usually prepared by the electrolysis of their fused chlorides. Their oxides are basic and the basic strength increases down the group. The solubility of carbonates and sulphates of alkali and alkaline earth metals show opposite trends. only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali & alkaline earth metals on heating give carbonates. Which of the following process is used in the extractive metallurgy of sodium?

Assertion (A): Aqueous solution of Na_(2)CO_(3) is alkaline in nature. Reason (R ): when dissolved in water, Na_(2)CO_(3) undergoes anionic hydrolysis.

Assertion (A): Aqueous solution of Na_(2)CO_(3) is alkaline in nature. Reason (R ): when dissolved in water, Na_(2)CO_(3) undergoes anionic hydrolysis.

Why potassium carbonate (K_(2)CO_(3)) cannot be prepared by Solvay-ammonia process ?

Why potassium carbonate (K_(2)CO_(3)) cannot be prepared by Solvay-ammonia process ?

Value of standard electrode potential for the oxidation of Cl^(-) ions is more positive than that of water, even then in the electrolysis of aqueous sodium chloride, why is Cl^(-) oxidsied at anode instead of water?

ICSE-SELF ASSESSMENT PAPER 04-QUESTIONS
  1. A sample of nitric acid is 55 per cent by mass. Calculate the mass of ...

    Text Solution

    |

  2. Write the IUPAC names of the following compounds: (i) CH(3)-overset(...

    Text Solution

    |

  3. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

    Text Solution

    |

  4. An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-on...

    Text Solution

    |

  5. What happens when an aqueous solution of potassium maleate is subject...

    Text Solution

    |

  6. If B–Cl bond has a dipole moment, explain why BCl(3) molecule has zer...

    Text Solution

    |

  7. What is bond order? How is it related to bond length and bond dissocia...

    Text Solution

    |

  8. Name the types of hybridisation which lead to the following geometries...

    Text Solution

    |

  9. 10.875 g of a mixture of NaCI and Na2CO3 was dissolved in water and th...

    Text Solution

    |

  10. 4 g of O2 and 2g of H2 are confined in a vessel of capacity 1 litre at...

    Text Solution

    |

  11. Give one reaction each to show that water can act as (i) an acid, ...

    Text Solution

    |

  12. Calculate the standard free energy change for the following reaction ...

    Text Solution

    |

  13. Establish a relationship between DeltaH and DeltaU. Under what conditi...

    Text Solution

    |

  14. How is ozone formed in the stratosphere?

    Text Solution

    |

  15. Select the correct answer : Decrease of amount of ozone in stratosph...

    Text Solution

    |

  16. Classify the following reactions in one of the reaction type studied i...

    Text Solution

    |

  17. What is the relationship between the members of following pairs of str...

    Text Solution

    |

  18. Write the molecular orbital .configurations of the following species: ...

    Text Solution

    |

  19. Calculate their bond order N(2)^-

    Text Solution

    |

  20. Predict their magnetic behaviour of N2+.

    Text Solution

    |