The conversion increase when the pH increase.
Conversion is increased when the pH increase.
(Cr2O7)2- + H2O -> CrO4- + 2H+ Chromate is yellow and Dichromate is orange. If the solution is yellow, then by LeChatlier's Principle, if an acid is added, then the Dichromate will form predominately.
In an acidic solution chromate ions are converted into dichromate ions.
The dichromate ion has the charge -2.
It is ionic. The dichromate ion, Cr2O72-, with the structure [O3Cr-O-CrO3]2-, consists of covalently bonded oxygen and chromium atoms (the electronegativities of Cr and O are 1.6 and 3.5, respectively, so the bonds are highly polar). This oxyanion is bonded ionically to magnesium ions, Mg2+. See Cotton and Wilkinson, Advanced Inorganic Chemistry, for more on the dichromate ion. Magnesium dichromate is the only alkaline earth dichromate that is appreciably soluble in water.
Conversion is increased when the pH increase.
(Cr2O7)2- + H2O -> CrO4- + 2H+ Chromate is yellow and Dichromate is orange. If the solution is yellow, then by LeChatlier's Principle, if an acid is added, then the Dichromate will form predominately.
Silver Chromate Ag=Silver CrO4= Chromate(a polyatomic ion)
The formula of the dichromate ion is Cr2O72-
Chromate and dichromate are related as they are both chemical species containing chromium in different oxidation states. Chromate (CrO4^2-) contains chromium in the +6 oxidation state, while dichromate (Cr2O7^2-) contains chromium in the +6 and +6 oxidation states. Dichromate can be formed by the oxidation of chromate in acidic conditions. Both chromate and dichromate are commonly used as oxidizing agents in various chemical reactions.
Fe2(Cr2O7)3
In an acidic solution chromate ions are converted into dichromate ions.
The chemical name of SnCr2O7 is tin(IV) dichromate.
lead(II) chromate
It is Ferrous chromate or Iron (II) chromate .
Chromate and dichromate are related because they are both chemical compounds that contain chromium. Dichromate is derived from chromate through the addition of oxygen atoms, resulting in a different chemical structure and properties.
You probably mean lead chromate since you have mentioned an oxidation state of 2+ for the lead ion and the chromate ion has an oxidation state of 2-. Lead chromate is yellow. Please see the link.