Tested Overhead Projection Series Compiled by HUBERT N. ALYEA
Princeton Universify
13. GROUP II. THE ALKALINE EARTHS. THE ZINC GROUP (Continued)
14. GROUP Ill. ALUMINUM. RARE EARTHS
F. Analytical
A. Occurrence
THE
Dem. 457-Birfhs)ones
E x p e ~ i m e n det!eloped f by James A. Young. T o show: The precipitates formed in qualitative analysis for calcium, strontium, and barium. Afaterials: CaCL-aq, SrCll-aq, B a C h a q ; also NaC1-aq, dil. H2SO1, oxalic acid-aq. Ii2Cr201-aq, Na2COraq; cells C-4 and C-3, stirrer. Pvocedure: ( a ) precipitation of group as carbonates. Project cell C-4 with cells full of water. Put 4 drops of Ca++, Sr++, Ba++, and I
