142 THE JOURNAL OF PHARMACOI.OGY. 



2. State the comparatives solubilities, in water, of the carbonates and sulfates of the 

 following elements : 



{a) Na, {c) Li, (^) Sr, . 



{b) K, {d) Ca, (/) Ba, 



Express degree of solubility as being either — very soluble — 

 soluble —slightly soluble or insoluble. 



3. Five details, with equations, of the Solvay-Process for the manufacture of sodium 

 carbonate. 



4. One gramme of a sample oi ferrous sulfate was dissolved in water, and required 

 for complete oxidation 35.9 Co. of decinormal potassium permanganate. The per 

 cent, of crystallized ferrous sulfate (FeSOi.jH.^O) present is desired. 



K = 59-03. Mn = 54.S, = 15.96. 



Fe = 55-88, 8 = 31-98. 



5. Turpeth's Mineral. 



(a) Give its chemical formula. 

 \b) What kind of a salt is it ? 



(^) Give a definition for this kind of a salt. 



6. Give tests for the presence of the following in solutions : 

 {a) Nitrites, {e) CgH^NH. CH,CO, 



[b) CH.CHO, (/) Propane triol, 

 {c) CrOs, (^)=S0,„ 



{d) H.BOa, • (A) = CH.,C00K. 



7. What is Paris Green ; how is it manufactured ? 



8. Platinum. 



(a) How may this metal be separated'from the gold, iron, and other metals of the 



platinum group accompanying it? 

 (6) Enumerate^z'^ characteristics for which this metal is remarkable. 

 (r) What is platinum sponge? Explain its uses. 



9. Complete the fullowing equations : 



(rz) 4KC10,+ I2HC1=: (/) QH., (OH),.COOH + beat = 



{b) 2KC10;, + l2= • {g) C,H5.0.NO + 3H2 = 



{c) AgCl + Na^SAf = (A) 2[(CnH:„COO)3C,H5]4-6H.O + 3PbO = 



{d) 4HgCl, + HPH.,0.2 + 2H20= (?) 2(CHo — CO — CH3) + 6CL., + Ca(OH)., = 



\e) C,;Hr,CH., 4- Clj (boiling in sun- 

 light) = (7) C,H,OH + HNO3 = 



10. What is the capacity in liters of an iron flask which holds 70 av. pounds of mer. 

 cury : 



11. Iron. 



(a) Give names, and state the composition of three ores, 

 (d) Explain details and theory of the process oi smelting. 



{c) Explain differences in carbon content between pig iron, wrought iron., and 

 steel. 



12. Give the chemical formulae of the following : 

 {a) TheybwA- metallic salts known as 



''vitriols.''' (rf) Pearl Ash. 



(6) Sal Seignette. (^) Calamine. 



{c) Betol. (/) Guaiacol. 



13. Chlorates. 



