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
K2M2d8
316
,, Sulphocyanide
KCNS
97
Silver Acetate ... ...
AgCjH.O,
167
,, Bromide
AgBr
188
,, Carbonate
Ag,C03
276
,, Chloride
AgCl
I43-5
,, Citrate.........
Ag3C6H507
513
,, Fluoride ......
AgFl
127
,, Iodide ... ......
Agl
235
,, Nitrate.........
AgN03
170
.. Nitrite.........
AgN02
154
,, Oxalate
Ag2C204
304
,, Oxide ...
Ag20
232
,, Sulphide ......
Ag2S
248
Sodium Acetate
NaC2H302, 6H,0
190
,, Biborate (Borax)
Na2B407ioH20
382
,, Bromide
NaBr
103
,, Bicarbonate......
NaHC03
84
,, Carbonate ......
NajC03ioH,0
286
,, Chloride
NaCl
58-5
,, Citrate ......
Na3C6Hp7
258
,, Hydrate ......
NaHO
40
,, Hyposulphite
Na2S2035H20
248
,, Iodide ......
Nal
150
,, Nitrate ......
NaN03
85
,, Sulphate ......
NajSOjoH-jO
322
,, Sulphite
Na2S037H20
252
Strontium Bromide ...
SrBr26H,0
355'5
,, Chloride ...
SrCl26H;0
266-5
,, Nitrate ......
Sr(N03)2
2II\5
Tin Chloride (Stannic)
SnCl4
260
,, ,, (Stannous)
SnCl22H20
225
Uranium Bromide
UBr48H20
704
.. Nitrate ......
U02(N03)26H,0
504
,, Sulphate ......
U02(S04)3H20
422
Zinc Bromide.........
ZnBr2
225
,, Chloride ...
ZnCl2
136
,, Iodide .........
Znl2
3i9
.. Nitrate.........
Zn(N03)26H,0
189
.. Sulphate ... ......
ZnS04, 7H26
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