VOLUMETRIC METHODS.
Several methods have been devised: for the details of these the student is referred to Sutton's "Handbook of Volumetric Analysis."
QUESTIONS.
1. The specific gravity of mercury is 13.596. What volume would 8 grams occupy?
2. If 3.169 grams of cinnabar gave 2.718 grams of mercury, what would be the percentage of the metal in the ore?
3. Pour solution of mercuric chloride on mercury and explain what happens.
4. On dissolving 0.3 gram of mercury in hot nitric acid, and passing sulphuretted hydrogen in excess through the diluted solution, what weight of precipitate will be got?
FOOTNOTES:
[9] Lead may be granulated by heating it to a little above the melting point, pouring it into a closed wooden box, and rapidly agitating it as it solidifies.
[10] A rod of iron placed in the crucible with the assays will decompose any regulus that may be formed.