41

Sept. 14, '49

Weight of 30 cc. beaker = 22.065 gms
Weight of beaker plus Hg = 36.960 [gms]
Weight of Hg = 14.915 gms to be dissolved in 4cc. conc. HNO₃
in 10 cc. H₂O
Weight of Hg undissolved = 8.305 mgs
Hg dissolved = 14.915 - 8.305 = 6.610 gms.

FAILED!
HgCl₂ precipitated by MnCl₂

Weight of 30 cc. beaker = 21.015 gms
[Weight] of beaker + Hg = 29.330 [gms]
[Weight] of Hg = 8.315 gms to be dissolved in 4 c.c.
conc. HNO₃ + 10 c.c. H₂O

Samples of Hg(NO₃)₂ was prepared. ~ 7.0 gms of Hg
contained in a soln of 9 c.c. volume with 7.75 gms
of Fe (NO₃)₃ ⋅ 9 H₂O (404 = M.W.)
Made two samples

Hg #1	Hg #2
4 c.c.	5 c.c.
added 1/2 c.c. of conc. HNO3	added 1 c.c. of conc. HNO3

Hg #1
Molarity of Hg ~
[Molarity of Fe ~

Hg #2
Hg ~ 3.88 x 5/6 = 3.24 M
Fe ~ 2.13 x 5/6 = 1.78 M