Oxidation states of Chromium - Chromium is a metal with many oxidation states, which of the following compounds has chromium in its lowest oxidation state?
Cr2O3 Cr2O7^2– MgCr2O3
Question 6 for Solution Set from Chemistry by Zumdahl - 6. Which choice gives the oxidation number for all three elements in Rb2SO4 correctly, and in the order shown in the formula (Rb, S, O)?
a) -2, +6, -2
b) -1, +4, -3
c) +2, +4, -2
d) +1, +6, -2
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oxidation number method - How do you note the change in the oxidation number method with this equation
C+HNO3--->CO2+NO2+H2O
oxidation-C-->CO2
C+2h2O--->CO2
C+2H2O--->CO2+4H+4e-
reduction=HNO3--->H2O
HNO3-->H2O+2H2O
H ...