Latest Content
Latest Community Postings
Recent Blog Entries
Community Downloads
ChExpress Blog
Ankur's Tech Blog
Community Admin Blog
Energy Efficient Hot and Cold Water
Electrical Process Tomography
Biodiesel: The Road Ahead
Methanol Plant Capacity Enhancement
Plate and Frame Heat Exchangers: Preliminary Design
Compressor Surging Under Control
Plant and Equipment Wellness, Part 1: Observing Variability


Share this topic:
[an error occurred while processing this directive]

banner2.gif (6526 bytes)

THE CHEMICAL ENGINEERS' RESOURCE PAGE
EMAIL ARCHIVE MESSAGE 022   

I am studying for the MCATs in a couple of days, and I was wondering if you knew the solubility rules for nitrates?  I know alkali and ammonium nitrates are all water soluble, but what about other species lie lead, Sr, Ba, etc.?
Please help; my gen. chem book did not list any rules for nitrates unfortunately.
Thanks

I suspect that the reason you haven't found this data is because the answer is not as easy as "soluble" or "not soluble" (and I assume that we're talking about water as the solvent):
Pb(NO3)2 is soluble to 38 ppm in "cold" water and 130 ppm in "hot" water
Ba(NO3)2 is soluble to 5 ppm in "cold" water and 34.2 ppm in "hot" water
Sr(NO3)2 is soluble to 40 ppm in "cold" water and 100 ppm in "hot" water
where "cold" water is generally 3 degrees C and "hot" water is generally 95 degrees C.
Since the solubilities vary with water temperature, I doubt that this is the "soluble" or "not soluble" type of question that you'll see on a
standardized test.  No one would be expected to know these numbers off the top of their head.  If one does appear, I guess the best answer may be along the lines of "somewhat soluble" or "moderately soluble"...good luck on the exam.

[an error occurred while processing this directive]