[As-3]

ok, ive been trying to figure how to do this lab all weekend and just drew a blank .  my materials are: wellplates, un-marked solution bottles, and pH paper.  the unknown solutions are NaCl, NaBr, NaOH, AgNO₃, and Pb(NO₃)₂.  im supposed to figure out which solutions are in the un-marked bottles.  any help is much appreciated (and needed )
~thnx.

[savoy7]

as a start think about pH and precipitation rxns

[As-3]

im thinking find out each of the solutions pH, knowning NaOH will be the most basic and use a pH chart for the rest...how bout that???
p.s. what about precipitation rxns?

[savoy7]

Look up solubility rules.  You can mix some of the solutions together, some will react and have a product, others will not.

http://dbhs.wvusd.k12.ca.us/webdocs/Solutions/Solubility-Rules.html

an example of solubility rules

AgNO₃ + NaCl yield some spectators and a product, AgCl.

[AWK]

1. Find NaOH with indicator paper
2. NaOH reacts with AgNO3 and Pb(NO3)2 giving characteristic reactions from which they can be identified
3. AgNO3 reacts with NaCl and NaBr giving precipitates of different color.
in this way all solution can be identified