Re: Principle of "Like Dissolves Like"

On Apr 11, 3:02 pm, Salmon Egg <salmon...@xxxxxxxxxxxxx> wrote:
On 4/11/07 8:39 AM, in article 461D0147.D266F...@xxxxxxxxxxxxx, "Uncle Al"

<Uncle...@xxxxxxxxxxxxx> wrote:
IT IS A TAUTOLOGY AND IT HAS ABUNDANT EXCEPTIONS. Do you think the
answer will change if you ask it repeatedly? This is not Phil300:
Social Stochasm within Political Ergodism.

How can a tautology have exceptions?

Bill
-- Fermez le Bush--about two years to go.

The stated "principle" can be either a tautology, or have abundant
exceptions, because it is so vague. What the heck does it mean for
two compounds to be "alike"? The rule is usually applied to mean
similar charge distriubutions- polar vs nonpolar molecules. But every
molecule is unique, so the notion of a two ended scale ranking
molecular polarity is itself a great simplification. The rule is even
less helpful to beginning chemistry students with their limited
knowledge of molecular structure and charge distribution.

Dave

.

Relevant Pages