You have a freakish friend who only drinks pure distilled water. And keeps jars of them stored up in his basement.
When you went over to visit him, he offered you a glass. To prove to you how pure his water is, he got a pH meter and measured the pH. To his surprise, the pH was not 7!
Shouldn't the pH of pure water be 7 at 25 degrees? What happened? And was the pH greater or less than 7?
(In reply to
yes, air by pleasance)
The problem with the CO2 theory is that CO2 doesn't readily go into water under standard atmospheric pressure (takes about 10kPa). Also the problem doesn't readily admit that he hasn't kept the jars tightly sealed. CO2 is a weak acid, but it wouldn't do anything to change the acidity of the water, you should be more troubled by hv (i.e. light) than CO2 from the air.
|
|
Posted by Kevin
on 2003-02-14 04:30:12 |
re: yes, air
