4 responses

  1. John
    March 10, 2013

    I stumbled upon this article during a search to determine whether water was classified as an alcohol in the technical sense because of the presence of its -OH functional group. I’m no professional, but I’m an undergrad college student, and I’ve taken several years of chemistry courses. I believe there are several errors in this article that deserve revision:

    1. The general formula for an acyclic, saturated alcohol should be CH3(CnH2n)OH. Methanol (CH3OH) for n=0 and ethanol (C2H5OH) for n=1 are two basic examples.

    2. Alcohols exist in 3 distinct states of matter just like any other substance. Ethanol for instance has a lower boiling point and melting point than water, but these properties indicate that it exists as a solid and a gas as well as a liquid (just as H2O does).

    3. Alcohols do not have a “static boiling point”. The boiling point of all liquids varies with atmospheric pressure just like water. They are often stated in sources as a single value recorded at a standard pressure of 1 atmosphere.

    4. There is no difference between a “molecular substance” and a “chemical compound”. The two terms mean one and the same thing: a substance that consists of two or more covalently bonded atoms (different species of atoms in this case versus an “elemental compound” like O2 or Cl2).

    I don’t intend to attack or defame the author with these corrections, but I believe a brief search of other sources reveals these revisions to be true. I hope this comment is helpful in any amends that are considered.

    Reply

    • Alex
      December 18, 2014

      100% correct

      Reply

  2. Blabbymouthjay
    June 15, 2018

    You interestingly failed to mention the very important “chemical “ state of water, as it exists in hydride bond within concrete . Limestone and other hydrogen bonded compounds .

    Reply

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