On Sat, 25 Apr 2009 15:27:54 -0700, Tony Hwang
wrote Re Does vinegar harm cement paving bricks?:

wrote:
On Apr 25, 6:08 pm, Tony Hwang wrote:
snip
Hmmm,
Organic vinegar such as apple cider vinegar is not acidic!

Well, if it isn't acidic, then it isn't vinegar. Vinegar is a weak (~
5%) solution of acetic acid in water. Some types may have various
"flavourings" in addition, but it is the acid that makes it vinegar.

High school chemistry class strikes again!

Chris

Hmmm,
When you have a heart burn due to too much stomach acid; acid refulux,
take some apple cider vinegar what happens? No heart burn! You can tell
from taste whether it is acidic or alkaline. Another example? Orange is
acidic, lemon is not.
Junior high science class strikes again!!

Wow dude. You don't know sh*t about chemistry.