The following
experiments, each containing .0648 gram of lead, were made by him in
illustration:
---------------+-------------------+---------------+---------------------
Copper taken. | Reagent added. | Copper found. | End reaction.
---------------+-------------------+---------------+---------------------
.2092 gram | -- | .2077 gram | fairly satisfactory
.2101 " | -- | .2092 " | "
.2167 " | sulphuric acid | .2152 " | "
.2117 " | " | .2108 " | "
.2109 " | phosphate of soda | .2092 " | good, colourless
.2205 " | " | .2174 " | rather yellow
---------------+-------------------+---------------+---------------------
_Effect of Sodium Acetate._--Each solution contained .3343 gram of
copper.
a.b.c. d. e. f. g.
grams. grams. grams. grams. grams.
"Acetate" added -- 16.2 16.2 16.2 16.2
"Iodide" added 3.5 3.5 7.0 3.5 7.0
Copper found .3343 .3324 .3351 .3269 .3356
In these experiments, except with the excessive quantities of acetate of
soda and the insufficiency of potassium iodide in the cases of c and
f, there was no difficulty with the after-blueing.
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