What is the oxidation state of Cr in Cr_2O_7^2-? A). +7 B). +6 C). +12 D). - 1 E). -2 What is the oxidation state of oxygen in CuO? What is the oxidation state of oxygen in KO2? What is the oxidation state of oxygen in CrO4^2-?
What is the oxidation state of the chromium atom in Cr3+? What is the oxidation number of the chromium atom in H2Cr2O4? What is the oxidation state of chromium and oxygen in C r 2 O 2 7 ? Determine the oxidation number of chromium in (a) Cr2O7-2 (b) Na...
What is the oxidation number of oxygen in BrO3-? What is the oxidation number of Cr in Cr(OH)^{-1}_4 (aq)? (a) Plus 2 (b) Plus 3 What is the oxidation number of Cr in CrO_4^2-? a) 2+. b) 2-. c) 3+. d) 6+. ...
In a chemical combination, the oxidation number of an element indicates the number of electrons lost (if the number is positive) or gained (if the number is negative) by an atom of that element in the compound. The oxidation number is zero if the element does not loose or gain any elect...
Chromate is also a strong oxidizer when in the +5 oxidation state. Normally, this compound is created through oxidation of Cr(III). Most chromium(V) compounds are precipitated as insoluble hydroxides. Chromium oxide (CrO) is formed when chromium trioxide (Cr2O) comes into contact with water ...
How life on Earth began remains an unexplained scientific problem. This problem is nuanced in its practical details and the way attempted explanations feedback with questions and developments in other areas of science, including astronomy, biology, and p
Hexavalent chromium is a metallic element that is in its +6 oxidation state. There are a number of uses for hexavalent chromium...
In light of the performance and simplicity of chromates for corrosion protection, it is clear that replacements are not only needed, but will also ideally be required to meet acceptable anti-corrosion performance (which is now industrially expected and will also be demanded by consumers who have ...
[17] synthesized a new Cr3+ ternary phase CaAl2Cr2O7 (wuboraite) in the system Al2O3–CaO–Cr2O3 under an air atmosphere at 1500 °C in which the oxidation of Cr is +3. From the powder X-ray diffraction (XRD) pattern study, they indexed that the crystal structure has a ...
The oxidation numbers of a given reactant can be determined by following arbitrarily set rules. These oxidation numbers are useful in determining whether a chemical reaction is an oxidation-reduction reaction. When we find that the oxidation state of an element changes, an oxidation reduction ...