Wt. 58.5 | magnesium | gives a milkiness, or precipitate,
| | indicating calcium; filter this
| | out and add ammonia, chloride of
| | ammonium, and phosphate of sodium
| | (clear solutions). A precipitate
| | indicates magnesium. Both the above
| | cause dampness in wet weather.
| |
| Sodium sulphate | As for "sulphates" in ammonia.
| |
Potassium | Potassium carbonate | Effervescence with dilute acids,
cyanide, KCN | nearly always | giving off a gas carbonic
Molec. Wt. 65, | present | anhydride, which renders
and hydrate, KHO | | lime-water turbid.
Molec. Wt. 56 | |
Kaolin | Chalk | Effervescence with dilute acids.
| |
Water, | Sulphates and | Same as for ammonia.
H_{2}O | chlorides |
Molec. Wt. 18 | |
| Calcium carbonate, | Deposited by boiling.
Pages:
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95