
(a)
Interpretation:
Balanced
Concept introduction:
Oxidation number of Sc in Sc2O3 = +3
Oxidation number of Sc inNa3ScF6 = +3
(b)
Interpretation:
Balanced chemical reaction for Cr(s) reacts with HCl(aq) to produce a blue solution containing Cr2+ should be written.
Concept introduction:
Cr(s) is in its lowest oxidation state of zero. In order to go for higher oxidation state of +2; it should be oxidized.
(c)
Interpretation:
Balanced chemical reaction for Cr2+(aq) is readily oxidized by O2(g) Cr3+(aq) should be written.
Concept introduction:
When Cr2+ oxidized into Cr3+; O2 gas act as the oxidizing agent.
(d)
Interpretation:
Reaction for Ag(s) reacts with concentrated HNO3 and NO2(g)is evolved; the balanced chemical should be written.
Concept introduction:
Concentrated nitric acid can oxidize Ag(s) to Ag+.

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Chapter 23 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
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- A certain inorganic cation has an electrophoretic mobility of 5.27 x 10-4 cm2s-1V-1. The same ion has a diffusion coefficient of 9.5 x 10-6cm2s-1. If this ion is separated from cations by CZE with a 75cm capillary, what is the expected plate count, N, at an applied voltage of 15.0kV? Under these separation conditions, the electroosmotic flow rate was 0.85mm s-1 toward the cathode. If the detector was 50.0cm from the injection end of the capillary, how long would it take in minutes for the analyte cation to reach the detector after the field was applied?arrow_forward2.arrow_forwardPlease solve for the following Electrochemistry that occursarrow_forward
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