Home
Class 9
CHEMISTRY
While diluting a solution of salt in wat...

While diluting a solution of salt in water, a student by mistake added acetone (boiling point `56^(@)`). What technique can be employed to get back the acetone? Justify your choice.

A

Simple distillation

B

Filtration

C

Evaporation

D

Crystallization

Text Solution

Verified by Experts

The correct Answer is:
A
Acetone is soluble in water, a homogeneous mixture is obtained and hence separation by separating funnel cannot be used. Acetone can be get back by simple distillation because the difference in the boiling points of acetone and water is more than `25^(@)`C.
Boiling point of acetone - `56^(@)`C
Boiling point of water - `100^(@)`C
In distillation flask, acetone will boil at `56^(@)`C and change into vapours and can be collected in flask after condensation.
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    NCERT EXEMPLAR|Exercise Atoms And Molecules|48 Videos

  • MATTER IN OUR SURROUNDINGS

    NCERT EXEMPLAR|Exercise Matter In Our Surroundings|27 Videos

Similar Questions

Explore conceptually related problems

Calculate the boiling point of solution containing 0.456g of camphor (molar mass =152 ) dissolved in 31.4g of acetone (boiling point =56.30^(@)C ), if the molar elevation constant per 100g of acetone is 17.2^(@)C.

Inspired by Alfred Werner (1866-1919), a KOTA student decided to reconduct a similar experiment on unknown salt samples of MCl_(3).xNH_(3) . The student found that some of the chloride ions could be prdipitated as AgCl on adding silver nitrate solution. He found that this salt was of 4 years (based on colour). He labelled these complexes as A (yellow complex) B( purple complex), C (Green complex), D (violet complex). He found that moles of AgCl precipitated (per mole of salt) in one case was 3, one case it was 2, and in two cases it was one. He then measured the electrical conductivity of various salt solutions and found that D had the lowest value. He then measured the boiling point of solutions of A, B, C, D and found that B had the 2nd highest boiling point, Based on the above information, answer the following questions. If atomic number of M is 27, then number of N-M-N bond angles in A will be :

Prachi took 50 mL of water in two beakers at room temperature and added sodium chloride to one beaker while sugar to the other, till no more solute would dissolve. Then she heated the contents of the beakers and added more solutes in them. (a) Will the amount of salt and sugar that can be dissolved in water at given temperature same ? (b) What will you expect to happen if she cools the contents of the beakers ? Justify your answer.

Inspired by Alfred Werner (1866-1919), a KOTA student decided to reconduct a similar experiment on unknown salt samples of MCl_(3).xNH_(3) . The student found that some of the chloride ions could be prdipitated as AgCl on adding silver nitrate solution. He found that this salt was of 4 years (based on colour). He labelled these complexes as A (yellow complex) B( purple complex), C (Green complex), D (violet complex). He found that moles of AgCl precipitated (per mole of salt) in one case was 3, one case it was 2, and in two cases it was one. He then measured the electrical conductivity of various salt solutions and found that D had the lowest value. He then measured the boiling point of solutions of A, B, C, D and found that B had the 2nd highest boiling point, Based on the above information, answer the following questions. What is the relationship between C and D (if C, had the lowest boiling point )?

Inspired by Alfred Werner (1866-1919), a KOTA student decided to reconduct a similar experiment on unknown salt samples of MCl_(3).xNH_(3) . The student found that some of the chloride ions could be prdipitated as AgCl on adding silver nitrate solution. He found that this salt was of 4 years (based on colour). He labelled these complexes as A (yellow complex) B( purple complex), C (Green complex), D (violet complex). He found that moles of AgCl precipitated (per mole of salt) in one case was 3, one case it was 2, and in two cases it was one. He then measured the electrical conductivity of various salt solutions and found that D had the lowest value. He then measured the boiling point of solutions of A, B, C, D and found that B had the 2nd highest boiling point, Based on the above information, answer the following questions. The order of electrical conductivity for the 4 complexes will be :

NCERT EXEMPLAR-IS MATTER AROUND US PURE-Is Matter Around Us Pure
  1. Salt can be recovered from its solution by evaporation. Suggest some o...

    Text Solution

    |

  2. The 'sea-water' can be classified as a homogeneous as well as heteroge...

    Text Solution

    |

  3. While diluting a solution of salt in water, a student by mistake added...

    Text Solution

    |

  4. What would you observe when (a) a saturated solution of potassium ch...

    Text Solution

    |

  5. Explain why particles of a colloidal solution do not settle down when ...

    Text Solution

    |

  6. Smoke and fog both are aerosols. In what way are they different?

    Text Solution

    |

  7. Classify the following as physical or chemical properties. (a) The ...

    Text Solution

    |

  8. The teacher instructed three students 'A', 'B' and 'C' respectively t...

    Text Solution

    |

  9. Name the process associated with the following (a) Dry ice is kept a...

    Text Solution

    |

  10. You are given two samples of water labelled as 'A' and 'B'. Sample 'A'...

    Text Solution

    |

  11. What are the favourable qualities given to gold when it is alloyed wit...

    Text Solution

    |

  12. An element is sonorous and highly ductile. Under which category would ...

    Text Solution

    |

  13. Give an example each for the mixture having the following characterist...

    Text Solution

    |

  14. Fill in the blanks. (a) A colloid is a ……… mixture and its component...

    Text Solution

    |

  15. Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixe...

    Text Solution

    |

  16. Give some examples of Tyndall effect observed in your surroundings?

    Text Solution

    |

  17. Can we separate alcohol dissolved in water by using a separating funne...

    Text Solution

    |

  18. On heating calcium carbonate gets converted into calcium oxide and car...

    Text Solution

    |

  19. Non-metals are usually poor conductors of heat and electricity. They a...

    Text Solution

    |

  20. Classify the substances given in Figure into elements and compounds.

    Text Solution

    |