Home
Class 11
CHEMISTRY
How can saline hydrides remove traces of...

How can saline hydrides remove traces of water from organic compouds?

Text Solution

Verified by Experts

Saline hydrides (i.e., `NaH,CaH_(2),`etc) react with water forming their corresponding metal hydroxides with the liberation of `H_(2)` gas. Thus, traces of water present in organic solvents can be easily removed by distilling them over saline hydrides when `H_(2)` escapes into the atmosphere, metal hydroxide it left in the flask while dry organic solvent distils over.
Alternatively, organic compounds containing traces of water can be dried by placing them in a desiccator containing saline hydrides at the bottom for a few hours or perferably overnight.
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    PRADEEP|Exercise NCERT Questions and Exercises with Answers (NCERT Exercises)|1 Videos
  • HYDROGEN

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWER, HINTS AND SOLUTIONS (NCERT Exemplar Problems Chapter 9 Hydrogen) Multiple Choice Question-I|18 Videos
  • HYDROGEN

    PRADEEP|Exercise CONCEPTUAL QUESTIONS (Water)|7 Videos
  • HYDROCARBONS

    PRADEEP|Exercise Competition Focus (JEE(main and advanced)/Medical Entrance) VIII. ASSERTION - REASON TYPE QUESTIONS|31 Videos
  • ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES TECHNIQUES

    PRADEEP|Exercise Competition Focus (Jee (Main and Advanced)/Medical Entrance) VIII. Assertion-Reason Type Questions|25 Videos

Similar Questions

Explore conceptually related problems

Ionic hydrides are frequently used to remove traces of water from organic compounds. What is the underlying basis of this process?

Saline hydrises are generally used to remvoe traces of water from organic compounds. Explain

Which is the most suitable method for removing the traces of water from ethanol ?

PRADEEP-HYDROGEN -NCERT Questions and Exercises with Answers (NCERT INTEXT SOLVED QUESTIONS)
  1. Compare the stuctures of H(2)O and H(2)O(2).

    Text Solution

    |

  2. What do you understand by the term 'auto-prolysis' of water ? What is ...

    Text Solution

    |

  3. Consider the reacton of water with F(2) and suggest, in terms of oxida...

    Text Solution

    |

  4. Complete the following chemical reactions. (i) PbS(s)+H(2)O(2)(aq) t...

    Text Solution

    |

  5. Describe the structure of the common form of ice.

    Text Solution

    |

  6. What causes the temporary and permanent hardness of water ?

    Text Solution

    |

  7. Discuss the principle and method of softening of hard water by synthet...

    Text Solution

    |

  8. Write chemical reactions to show the amphoteric nature of water.

    Text Solution

    |

  9. Write chemical reactions to justifty that hydrogen peroxide can functi...

    Text Solution

    |

  10. What is meant by 'demineralised water' and how it can be obtained?

    Text Solution

    |

  11. Is demineralised or distilled water useful for drinking purpose? If no...

    Text Solution

    |

  12. Describe the usefulness of water in bioshphere and biological systems.

    Text Solution

    |

  13. What properties of water make it useful as a solvent? What types of co...

    Text Solution

    |

  14. Knowing the properties of H(2)O and D(2)O, do you think that D(2)O can...

    Text Solution

    |

  15. What is the difference between hydrolysis and hydration?

    Text Solution

    |

  16. How can saline hydrides remove traces of water from organic compouds?

    Text Solution

    |

  17. What do you expect the nature of hydrides is, it formed by elements of...

    Text Solution

    |

  18. Do you expect different products in solution when aluminium (III) chlo...

    Text Solution

    |

  19. How does H(2)O(2) behave as a bleaching agent?

    Text Solution

    |

  20. What do you understand by the terms: (i) hydrogen economy (ii) hydroge...

    Text Solution

    |