A Laboratory Outline of Smiths Intermediate Chemistry
A Laboratory Outline of Smiths Intermediate Chemistry
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1 and No. 2. * Starch. Hydro- chloric acid (cone. ). Potassium iodide (sol. ). Iodine. Sodium carbonate (sol. ). Litmus papers. Sugar. Molasses.
a. Starch and Glucose. Shake about 0. 5 c. C. Of starch with 20 c. C. Of water and then boil (?). Add a few drops of the liquid to 5 c. C. Of Fehling's solution and warm the latter (?). Does starch change Fehling's solution?
Place three-fourths of the remaining starch suspension in a flask, set it on the wire gauze, add 5 or 6 drops of concentrated hyd...rochloric acid, and boil gently for ten minutes. Place the funnel in the mouth of the flask, to diminish the loss by evapora- tion, and add a little water when necessary so as to keep the volume constant.
b. While this is going on, cool the rest of the starch sus- pension in running water and pour it into a beaker full of cold water. Add one drop from 5 c. C. Of a solution of potassium iodide in which a single crystal of iodine has been dissolved (?).
e. Cool the contents of the flask (from a) and add sodium * No.
What to read after A Laboratory Outline of Smiths Intermediate Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Smith Alexander to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
1 and No. 2. * Starch. Hydro- chloric acid (cone. ). Potassium iodide (sol. ). Iodine. Sodium carbonate (sol. ). Litmus papers. Sugar. Molasses.
a. Starch and Glucose. Shake about 0. 5 c. C. Of starch with 20 c. C. Of water and then boil (?). Add a few drops of the liquid to 5 c. C. Of Fehling's solution and warm the latter (?). Does starch change Fehling's solution?
Place three-fourths of the remaining starch suspension in a flask, set it on the wire gauze, add 5 or 6 drops of concentrated hyd...rochloric acid, and boil gently for ten minutes. Place the funnel in the mouth of the flask, to diminish the loss by evapora- tion, and add a little water when necessary so as to keep the volume constant.
b. While this is going on, cool the rest of the starch sus- pension in running water and pour it into a beaker full of cold water. Add one drop from 5 c. C. Of a solution of potassium iodide in which a single crystal of iodine has been dissolved (?).
e. Cool the contents of the flask (from a) and add sodium * No.
What to read after A Laboratory Outline of Smiths Intermediate Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Smith Alexander to read onlineMoreLess
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