Home
Class 12
CHEMISTRY
The function of ZnCl(2) in Lucas test fo...

The function of `ZnCl_(2)` in Lucas test for alcohols is

A

to act as acid catalyst and react with HCl to form `H_(2)ZnCl_(4)`

B

to act as base catalyst and react with `NAOH` to form `Na_(2)Zn(OH)_(4)`

C

to act as amphoteric catalyst

D

to act as neutral catalyst

Text Solution

Verified by Experts

The correct Answer is:
A

`2HCl +ZnCl_(2) rarr H_(2)ZnCl_(4)`
`ROH +H_(2)ZnCl_(4) rarr RCl+ZnCl_(2)+H_(2)O+HCl`
`ROH +HCl overset(ZnCl_(2))rarr R Cl+H_(2)O`
Promotional Banner

Topper's Solved these Questions

  • ALCOHOLS, PHENOLS AND ETHERS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET Corner|33 Videos
  • ALCOHOLS, PHENOLS AND ETHERS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PRACTICE EXERCISE (Exercise 1 (TOPICAL PROBLEMS))|119 Videos
  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|21 Videos

Similar Questions

Explore conceptually related problems

The function of ZnCl_(2) in Friedal Craft's reaction is

Lucas test is done for

In lucas test immediate from alcohols by

Alcohols are acidic in nature because hydrogen is attached to oxygen which is an electronegative element. Alcohol is weaker acid than water because OH^(-) ion is more stable than R-O^(-) ion. R-O^(-) is less stable, due to +I effect of the alkyl group. Acidity of alcohols increases with increase in the stability of acid anion. Some alcohol like CH_(3)-OH, CF_(3)-CH_(2)-OH, (CF_(3))_(3)C-OH ae more acidic than water. Lucas test of alcohols involves following reaction : R-OH+underset("conc.")(HCl)underset(ZnCl_(2))overset("anhydrous")(rarr)underset("white turbidity")(RCl)+H_(2)O Select the correct statements for the Lucas test.

|| Chemical properties OF alcohol || acid catalysed dehydration OF alcohol || grooves reaction || esterification || Lucas test for 1,2,3 degree alcohol ||

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ALCOHOLS, PHENOLS AND ETHERS-PRACTICE EXERCISE (Exercise 2 (MISCELLANEOUS PROBLEMS))
  1. Hydroboration oxidation of 4-methyl octene would give

    Text Solution

    |

  2. Acid catalysed hydration of alkenes except ethene leads to the formati...

    Text Solution

    |

  3. The function of ZnCl(2) in Lucas test for alcohols is

    Text Solution

    |

  4. Which one of the following is most acidic ?

    Text Solution

    |

  5. Consider the following reaction, C(2)H(5)OH+H(2)SO(4)rarr Product ...

    Text Solution

    |

  6. Compound Ph-O-overset(O)overset(||)(C)-Ph can be prepared by the react...

    Text Solution

    |

  7. Which one of the following compounds will not react with CH(3)MgBr?

    Text Solution

    |

  8. R-CH(2)-CH(2)OH can be converted into RCH(2)CH(2)COOH the correct seq...

    Text Solution

    |

  9. Among the following compounds which can be dehydrated very easily is-

    Text Solution

    |

  10. In the following reaction which bonds are cleaved? CH(3)CH(2)-overse...

    Text Solution

    |

  11. Consider the following reaction,

    Text Solution

    |

  12. Text Solution

    |

  13. The best method to prepare cyclohexene from cyclohexanol is by using

    Text Solution

    |

  14. In the above dehydration reaction .^(18)C will be in

    Text Solution

    |

  15. underset(OH)underset(|)(CH(2)=CHCHCH(2)CH(2)OH)overset(MnO(2))rarrA,A ...

    Text Solution

    |

  16. Two aromatic compounds having formula C(7)H(8) O which are easily iden...

    Text Solution

    |

  17. Select the schemes A, B C out of I. acid catalysed hydration II. H...

    Text Solution

    |

  18. The major product obtained on interaction of phenol with sodium hydrox...

    Text Solution

    |

  19. Ester A(C(4)H(8)O(2))+underset("(2 parts)")(CH(3)MgBr)overset(H(3)O^(+...

    Text Solution

    |

  20. Which of the following compound would not evolve CO(2) when treated wi...

    Text Solution

    |