Ammonium ions have a charge of +1 and Chromate ions have a charge of -2. When these ions react, they form Ammonium Chromate; 2NH4CrO4
Chromate
If it would have existed it formula would have been NH4CrO4
Yellow
Chromate
Ammonium Chromate = (NH4)2CrO4
Ammonium chromate = (NH4)2CrO4
Ammonium ions have a charge of +1 and Chromate ions have a charge of -2. When these ions react, they form Ammonium Chromate; 2NH4CrO4
Lead Chromate and Ammonium Sulfate by a double-replacement reaction.
(NH4)2 CrO4 But I do not know why de ammonium has 2 molecules.......and that´s my question....
152.10 g/mol
Chromate
(NH4)2CrO4
(NH4)2CrO4
If it would have existed it formula would have been NH4CrO4
Yellow
The chromate ion (CrO4-2) has yellow colour so all the chromate compounds including silver chromate is yellow in colour.