Ask questions and get helpful answers.

Explain the results in terms of polarities and/or hydrogen bonding.

- water and ethyl alcohol= miscible
water is highly polar and ethyl alcohol has intermediate polarity.

- water and diethyl ether= immiscible
water is highly polar and diethyl ether is only slightly polar

- water and methylene chloride= immiscible
water is highly polar and methylene chloride is what?

- water and hexane= immiscible
water is highly polar and hexane is nonpolar

- hexane and methylene chloride= miscible
hexane is nonpolar and methylene chloride is ? nonpolar?

Are these correct? Also, if you can add any info. on the polarities or include hydrogen bonding in the explanation please do.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
3 answers
  1. It is not that easy to do these predictions just based on polarity. You need to consider the molecule's ability to hydrogen bond (i.e. is it hydrophylic?) or contains a large hydrocarbon part which makes it hydrophobic.

    If we start with the alcohols, the short chain alcohols (methanol and ethanol) are miscible with water as the OH can hydrogen bond with water molecules. In addition the small hydrocarbon part makes them very much less hydrophobic than a molecule with a longer hydrocarbon chain. As the chain length increases the molecule becomes more hyrdophobic and the solubility in water decreases.

    A similar effect is seen with the ethers. Dimethyether is soluble in water whereas diethyl ether with more hydrocarbon is much less soluble 'immiscible' although there is an appreciable solubility in water.

    The chlorinated compounds chloromethane through to carbontetrachloride are polar organic molecules, but because they cannot hydrogen bond with water are immiscible with water, i.e. are hydrophobic.

    Does this help?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. Somewhat, but still a little confused about the individual cases. Thanks though.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. why is water and tetrachloride immiscible

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Similar Questions

  1. Physics

    Glycerin is poured into an open U-shaped tube until the height in both sides is 20 {\rm cm}. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20 {\rm cm}. The two liquids do not mix. What is the difference in height

  2. chemistry

    which of the following molecules will exhibit hydrogen bonding? a. CH3OCH3 b. HF c. CH4 d. LiH

  3. Chem

    Which of the following statements is (or are) true? I Hydrogen bonds occur between two hydrogen atoms. II Hydrogen bonding occurs between a hydrogen atom and an oxygen atom within a molecule. III Hydrogen bonding requires a molecule containing a large

  4. science

    A drinking glass at a crime scene contains a clear colorless liquid that may be water or alcohol. As the investigator, you know that the densities of alcohol, water, and ice are 0.79g/mL, and 0.92/mL. Design a simple method to determine the identity of the

  5. Chemistry

    What method of separation would you use for the following mixtures: acetone and water aluminum powder and ethyl alcohol. these were questions asked after a chapter of reading in my chem book. the separation techniques listed in the reading are filtration,

  6. Chemistry

    Two liquids, n-pentane and 1-butanol, have nearly the same molecular weight, but significantly different temperature values. Why is there a difference between these two substances, based on their intermolecular forces? temperature values? Do you mean

  7. Chemistry

    Put in order from strongest to weakest: London Dispersion Forces, Hydrogen Bonds, Dipole-dipole interactions, ionic bonding, and covalent bonding.

  8. general biology

    Whcih property of water explains ice floating on the top of a pond rather than sinking to the bottom? a. surface tension b. freezing point at 0 celcius c. capillary action d. extensive hydrogen bonding

  9. OChem

    What intermolecular forces are important in the binding of organic molecules to the absorbent in absorption chromatogrpahy? Select all that apply. A) London forces B) Van der Waals forces C) Covalent Bonding D) Hydrogen bonding E) Dipole-dipole

  10. physics

    You have exactly 1 L of ethyl alcohol at room temperature 23 C. You put it in a refrigerator at 4 C.What's its new volume?

Still need help?

You can ask a new question or browse existing questions.