An Introduction to Qualitative Chemical Analysis by the Inductive Method; A Laboratory Manual for Colleges and High Schools (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 edition. Excerpt: ...when carried in the pocket with matches? Why does a silver spoon blacken which has been used in beating eggs? Try the experiment. What is the effect of using silver drinking cups with sulphur waters? Potassium cyanide is a good solvent for silver sulphide, and is sometimes used for cleansing tarnished silver. It is poisonous, and should be used with caution. In what form is Pb found in nature? How is it separated from its ores? Fuse a lead salt on charcoal. Some of its physical properties? What is the effect of leaden water pipes on drinking water? What is litharge? White lead? White paint? What is the "lead " of lead pencils? In what form is Hg found in nature? How is Hg separated from its ores? Heat red oxide of mercury in a closed tube of hard glass. What is corrosive sublimate? Calomel? Lunar caustic? Sugar of lead? To a solution of AgNO3, containing about 5 grams of the salt in loo cc of water, add a few drops of mercury, and allow it to remain for several days. The silver will separate in delicate crystals. When does mercury become solid? What is the specific gravity of Hg? of Pb? Drop a small ball of iron or stone, a marble or a lead bullet, into mercury contained in a dish. Drop a copper coin into a solution of corrosive sublimate. Explain. Try HCl, H2SO4 and HNO3 and find the true solvent for Hg. SEPARATION OF METALS OF SECOND GROUP. I. What metals constitute Group II.? 2. Pb must be included in this group, as it is not completely separated as a chloride in the first group. Why? 3. After the metals of the first group have been set aside, what reagents will precipitate those of the second group and no others? 4. What are the precipitates thus formed? 5. How are these precipitates (filtered and washed) affected by yellow ammonium sulphide, ...