by Guest » Sat Apr 16, 2005 11:43 pm
Picomolar? The molarity of a solution is the number of moles of a substance in liter of solution. 1 M NaCl would be 1 mole of NaCl dissolved in enough water that the total volume of solution would be 1 L
In the SI, molarity, molality, and normality are considered obsolete and not recommended. NIST SP 811 recommends mol/L or mol/dm^3 to replace M for molarity. I believe ISO 31-8 is consistent with SP811. However, I still see a ton of chemistry references to these three terms on the web.
A 1 pM solution would be very dilute, 1 picomole per liter of solution.