126 THE ALUMNI JOURNAL 



8. When is a titration considered to be completed ? Define the mean- 



ing of : indicator, end reaction, drop end point, factor. Give 

 examples of two titrations in which no indicator is needed. 

 Explain why? 



9. Give the formula used for calculation of results in volumetric 



analysis. Why is a liquid substance sometimes measured but 

 more often weighed for titration? What difference does this 

 make in the report of the results? 



10. Represent by equations the principal reactions involved and find 



the factors required for calculation of results in the following 

 determinations: (a) Sulfuric acid (98.09) with N/i alkali 

 V. S.; (b) Rochelle salt (210.14) with N/5 acid V. S. ; 



(c) Na-thiosulfate (248.24) with N/io iodine V. S. ; 



(d) strontium bromide (247.46) with N/20 silver nitrate V. S. 



11. Find the per cent, of purity of solid potassium hydroxide of which 



0.5 gm. required for complete neutralization 15 cc. of N/2 

 acid V. S. Potassium hydroxide=56. 



12. Of a tincture of iodine, 5 cc. consumed 33.1 cc. N/io thiosulfate 



V. S. ; how strong is the tincture ? Calculate the volume of 

 alcohol U. S. P. required to change 500 cc. of the tincture to 

 the official strength. Iodine=:i27. Na-thiosulfate=248.3. 



MATERIA MEDICA. 

 Spring, 1913. 



1. State the geographical source of each of the following drugs: 



Ipecac ; Eucalyptus ; Castor Oil Seeds ; Golden Seal ; Gel- 

 semium ; Belladonna ; Ergot ; Buchu ; Mustard ; Acacia. 



2. Write out in full, correctly spelled, the official Latin title of each 



of the following : Fox Glove ; Jaborandi ; Ext. of Henbane ; 

 Rochelle Salt; Monkshood; Cocoa Butter; Blue Mass; Yellow 

 Jessamine ; Tine, of Larkspur ; Syr. of Rhubarb. 



3. What is the standard of active principle in each of the following: 



Oil of Cinnamon; Oil of Eucalyptus; Extract of Nux Vomica; 

 Calabar Bean ; Red Cinchona ; Aconite ; Ipecac ; Alcohol ; Sul- 

 ■ phurous Acid ; Coca. 



4. State the botanical characters of the Labiatae. 



5. Name all the mydriatic alkaloids. To what family do they belong? 



