What is the oxidizing agent in the redox reaction represented by the following c
ID: 1044463 • Letter: W
Question
What is the oxidizing agent in the redox reaction represented by the following cell notation? Mn(s) | Mn2+(aq) ? K+(aq) I K(s) a. Mn(s) b. Mn2(aq) c. K+(aq) d. K(s) c. Pt 9. Determine which of the following pairs of reactants will result in a spontaneous reaction at 25°C. a. Pb2*(aq)+ Au(s) b. Ag' (ag)+ Br (aq) c. Na (aq) + Al(s) d. Fe (a?)+ Al(6) e. None of the above pairs will react. 10. Determine which of the following pairs of reactants will result in a spontaneous reaction at 25°c. a. Sn+(a?)+ Mg(s) b. Cr (a?) + Ni(s) c. Zn(s) + Na (aq) d. Cd(s)+ Ba (aq) c. None of the above pairs will react 11. Which of the following metals will dissolve in nitric acid but NOT hydrochloric? a. Ba b. Mn c. Cu d. Cr e. Mg Which of the following metals will dissolve in nitric acid but NOT hydrochloric? a. b. Zn c. Mg d. Ag e. Al 12. Li Which of the following metals will dissolve in HCI? a. Ca b. Na c. Cd d. Ni e. all of the above 13.Explanation / Answer
For number 8, K+ acts as the oxidizing agent as it is the one which is reduced in the redox reaction.
For number 9, the correct answer is Fe+3 (aq) + Al (s). This is obtained with reduction potentials, and getting the overall redox potential. If the overall potential is positive, the reaction will be spontaneous. The only case in which this happens is letter d).
For number 10, same case as number 9, only in this case the only one that results in a positive overall potential is letter a).
For number 11, copper is the correct answer, as it is one of the most unreactive metals. It does react with nitric acid, but in a different way, realeasing nitric oxides instead of hydrogen.
For number 12, same case as 11, but now the correct answer is silver.
For number 13, all of the metals mentioned will dissolve in HCl.
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