The Dictionary Of Photography
A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.
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Equivalence, Chemical
Formula.
Molecular Weight.
Potassium Nitrate
KNO,
IOI
,, Permanganate
K
2
M
2
d
8
316
,, Sulphocyanide
KCNS
97
Silver Acetate ... ...
AgCjH.O,
167
,, Bromide
AgBr
188
,, Carbonate
Ag,C0
3
276
,, Chloride
AgCl
I43-5
,, Citrate.........
Ag
3
C
6
H
5
0
7
513
,, Fluoride ......
AgFl
127
,, Iodide ... ......
Agl
235
,, Nitrate.........
AgN0
3
170
.. Nitrite.........
AgN0
2
154
,, Oxalate
Ag
2
C
2
0
4
304
,, Oxide ...
Ag
2
0
232
,, Sulphide ......
Ag
2
S
248
Sodium Acetate
NaC
2
H
3
0
2
, 6H,0
190
,, Biborate (Borax)
Na
2
B
4
0
7
ioH
2
0
382
,, Bromide
NaBr
103
,, Bicarbonate......
NaHC0
3
84
,, Carbonate ......
NajC0
3
ioH,0
286
,, Chloride
NaCl
58-5
,, Citrate ......
Na
3
C
6
Hp
7
258
,, Hydrate ......
NaHO
40
,, Hyposulphite
Na
2
S
2
0
3
5H
2
0
248
,, Iodide ......
Nal
150
,, Nitrate ......
NaN0
3
85
,, Sulphate ......
NajSOjoH-jO
322
,, Sulphite
Na
2
S0
3
7H
2
0
252
Strontium Bromide ...
SrBr
2
6H,0
355'5
,, Chloride ...
SrCl
2
6H;0
266-5
,, Nitrate ......
Sr(N0
3
)
2
2II\5
Tin Chloride (Stannic)
SnCl4
260
,, ,, (Stannous)
SnCl
2
2H
2
0
225
Uranium Bromide
UBr
4
8H
2
0
704
.. Nitrate ......
U0
2
(N0
3
)
2
6H,0
504
,, Sulphate ......
U0
2
(S0
4
)3H
2
0
422
Zinc Bromide.........
ZnBr
2
225
,, Chloride ...
ZnCl
2
136
,, Iodide .........
Znl
2
3i9
.. Nitrate.........
Zn(N0
3
)
2
6H,0
189
.. Sulphate ... ......
ZnS0
4
, 7H
2
6
287
As bearing on calculations relating to chemical equivalence reference may be made to the following articles : -
Calculations and Constants, Hydrometer, Thermometer,
also
Weighing and Measuring.
288