0
In potassium dichromate and potassium chromate the oxidation state of chromium is 6 but both have different colors?
Wiki User
∙ 15y ago
Cr(VI) should have no unpaired electrons and have no color, but when bound to oxygen, charge transfer occurs from the O 2-. CrO4 (chromate) has four oxygens which all charge transfer to the Chromium giving orange color. In Cr2O7 (dichromate) one oxygen bridges between the two Chromium atoms so each only gets charge transfer from three oxygens. Cr(VI) should have no unpaired electrons and have no color, but when bound to oxygen, charge transfer occurs from the O 2-. CrO4 (chromate) has four oxygens which all charge transfer to the Chromium giving orange color. In Cr2O7 (dichromate) one oxygen bridges between the two Chromium atoms so each only gets charge transfer from three oxygens.
Wiki User
∙ 15y ago
Potassium dichromate appears orange-red due to the presence of two chromium atoms in the +6 oxidation state. On the other hand, potassium chromate appears yellow as it contains only one chromium atom in the +6 oxidation state. The difference in color is due to the different chemical environments and structures of the two compounds.
Add your answer:
Earn +20 pts
What is the name of this formula k2CrO4?
The name of the formula K2CrO4 is potassium chromate.
What the name of K2CrO4?
Potassium chromate K2Cr(VI)O4 Indicates the oxidation state of the chromium component.
Symbol for dichromate?
The formula of the dichromate ion is Cr2O72-
What is the chemical name of SnCr2O7?
The chemical name of SnCr2O7 is tin(IV) dichromate.
What is the name for PbCr2O7?
The chemical name for PbCr2O7 is lead dichromate.
Is there any way to make lead chromate?
by the reaction of lead nitrate with potassium chromate or potassium dichromate
What is the name of this formula k2CrO4?
The name of the formula K2CrO4 is potassium chromate.
What the name of K2CrO4?
Potassium chromate K2Cr(VI)O4 Indicates the oxidation state of the chromium component.
Which Medicines contain potassium chromate?
I think Potassium chromate is not used in medicines. However, Potassium dichromate is used in making a homeopathic medicine called Kali Bichromicum
Symbol for dichromate?
The formula of the dichromate ion is Cr2O72-
What is the chemical formula of potassium chromate?
This is a mixture of 2K+ and Cr2O72- ions in strong sulfuric acid.2CrO4- + 2H+ ----> Cr2O72- + H2Ochromate-yellow -> dichromate-orangeNote:Potassium ions do NOT react, they are tribune-ions
How chromate ions are converted into dichromate ions?
In an acidic solution chromate ions are converted into dichromate ions.
Chemical formula for potassium and chromate?
Reaction of Potassium hydroxide or any potassium salt of a weak acid with chromic acid produces Potassium chromate. KOH + H2CrO4 ----> K2CrO4 + H2O K+ + H2CrO4 ----> K2CrO4 + H+
What is the chemical name of SnCr2O7?
The chemical name of SnCr2O7 is tin(IV) dichromate.
What is the name for PbCr2O7?
The chemical name for PbCr2O7 is lead dichromate.
What is the equivalent weight of K2Cr2O7 fully explanation?
Equivalent weight of potassium dichromate = Molecular mass/6 = 294,185/6 = 49,0308
What is the chemical name of ZnCrO4?
It is Ferrous chromate or Iron (II) chromate .
