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dichromate ion
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What is the oxidation number of Cr in Cr2O72 is?
+6 for Cr, -2 for each O in Cr2O72-
What is formula of dichromate?
Fe2(Cr2O7)3
What is the oxidation number of Cr2O72?
In Cr2O72- chromium (Cr) has an oxidation number of 6+ while oxygen has an oxidation number of 2-.
How many atoms are found in dichromate?
Cr2O72− ion has 9 atoms.
Is K2Cr207 an ionic compound?
Yes, sure it is: 2K+ and Cr2O72- ions
What is the oxidation number of Cr in Cr2O72 is?
+6 for Cr, -2 for each O in Cr2O72-
What is formula of dichromate?
Fe2(Cr2O7)3
What is the oxidation number of Cr2O72?
In Cr2O72- chromium (Cr) has an oxidation number of 6+ while oxygen has an oxidation number of 2-.
How many atoms are found in dichromate?
Cr2O72− ion has 9 atoms.
Is K2Cr207 an ionic compound?
Yes, sure it is: 2K+ and Cr2O72- ions
What is the chemical make up of hexavalent chromium?
It is a valence of chromium. The hexavalent chromium is present in anions as CrO42- and Cr2O72-.
What is the dissociation equation for K2Cr2O7?
K2Cr2O7(aq) ------> 2K+(aq)+Cr2O72-(aq)
What correctly provides the names and formulas of polyatomic ions?
chromate: CrO42-; dichromate: Cr2O72-
What is the chemical name of NH4 Cr2O72-?
The chemical formula (NH4)2Cr2O7 is for ammonium dichromate.
Why the oxidation number of Cr2O72- is 6?
It is true for chromium. But O shows 2asthe oxidation number.
Chemical reaction between iron and potassium dichromate?
Cr2O72- + 6Fe2++ 14H+ --> 2Cr3+ + 6Fe3+ + 7H2O
What is the formula for acidified potassium dichromate?
This is a mixture of 2K+ and Cr2O72- ions in strong sulfuric acid, made from potassium chromate.2CrO4- + 2H+ ----> Cr2O72- + H2Ochromate-yellow -> dichromate-orangeNote:Potassium ions do NOT react, they are tribune-ions
