An Introduction to the Study of Qualitative Chemical Analysis
An Introduction to the Study of Qualitative Chemical Analysis
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Black oxide of manganese (MnO 2 ) when heated decomposes as follows : 3MnO. 2 = Mn 3 O 4 -f O 2 . Oxygen is generally made by heating potassium chlorate (KC1O 3 ). By mixing with the KC1O 3 some MnO 2 or Fe 2 O 3 the oxygen conies oif at a lower tempera- ture and more regularly. The MnO 2 should be heated to redness to insure the destruction of any impurity of organic matter before using it to mix with KC1O 3 .
GENERAL CHEMISTRY. 25 31. Mix about equal weights of KC1O 3 and MnO 2 . Fill a test-...tube about one-third full of the mixture, heat and collect the gas over water, and try the following exper- iments : (a) Plunge the glowing end of a splinter into a bottle of oxygen.
(5) Fasten a piece of charcoal to a large iron wire, heat it to redness, and lower into a bottle of oxygen.
(c) Ignite some sulphur placed in a hollowed crayon, and lower it into a bottle of oxygen.
(d) Same as (c), substituting a piece of dry phosphorus for sulphur.
(e) Same as (c), substituting a piece of sodium for sul- phur.
What to read after An Introduction to the Study of Qualitative Chemical Analysis?
You can find similar books in the "Read Also" column, or choose other free books by J T John Thomas Mcgill to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Black oxide of manganese (MnO 2 ) when heated decomposes as follows : 3MnO. 2 = Mn 3 O 4 -f O 2 . Oxygen is generally made by heating potassium chlorate (KC1O 3 ). By mixing with the KC1O 3 some MnO 2 or Fe 2 O 3 the oxygen conies oif at a lower tempera- ture and more regularly. The MnO 2 should be heated to redness to insure the destruction of any impurity of organic matter before using it to mix with KC1O 3 .
GENERAL CHEMISTRY. 25 31. Mix about equal weights of KC1O 3 and MnO 2 . Fill a test-...tube about one-third full of the mixture, heat and collect the gas over water, and try the following exper- iments : (a) Plunge the glowing end of a splinter into a bottle of oxygen.
(5) Fasten a piece of charcoal to a large iron wire, heat it to redness, and lower into a bottle of oxygen.
(c) Ignite some sulphur placed in a hollowed crayon, and lower it into a bottle of oxygen.
(d) Same as (c), substituting a piece of dry phosphorus for sulphur.
(e) Same as (c), substituting a piece of sodium for sul- phur.
What to read after An Introduction to the Study of Qualitative Chemical Analysis?
You can find similar books in the "Read Also" column, or choose other free books by J T John Thomas Mcgill to read onlineMoreLess
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