1. Which statement about oxidation numbers (or states) is not true? D. The oxida
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Question
1. Which statement about oxidation numbers (or states) is not true?
D. The oxidation number gives you insight into where the electron rich and electron deficient areas (relative to individual atoms) of a molecule are located.
4. Which statement best describes the primary limitation of oxidation state (or oxidation number)?
D. Oxidation states (or numbers) are affected by electronegativity differences between atoms.
8. The reaction of copper and silver nitrate is spontaneous.
Cu(s) + 2AgNO3(aq)
Cu(NO3)2(aq) + 2Ag(s)
The reverse reaction, in which silver metal is placed in the copper nitrate solution, is not spontaneous.
Which statement best describes the oxidizing and reducing abilities of the reactants?
D. Copper is a better oxidizing agent than silver and silver is a better reducing agent than copper.
15. In an expanded redox activity series, aluminum is located above iron. Which statement correctly predicts what will happen (or not happen) when these two metals and its cations interact?
D. Iron will act as the stronger reducing agent and aluminum will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of aluminum will decrease.
A. For oxidation numbers (or states), we completely disregard the notion of sharing electrons. The covalent electrons in a molecule are assigned to either one atom or the other. B. The oxidation number tells you the exact number of electrons that each atom has or is missing. C. When determining oxidation states for two different atoms bonded in a molecule, you assign the electrons to the atom with the greater electronegativity value.D. The oxidation number gives you insight into where the electron rich and electron deficient areas (relative to individual atoms) of a molecule are located.
4. Which statement best describes the primary limitation of oxidation state (or oxidation number)?
A. In molecules, electrons are not just in atomic orbitals. They are also in molecular orbitals. Therefore, oxidation states (or numbers) do not necessarily represent the electron reality for each atom. B. Oxidation numbers attempt to account for where electrons are in a molecule. C. Oxidation states attempt to assign electrons to atoms in a molecule.D. Oxidation states (or numbers) are affected by electronegativity differences between atoms.
8. The reaction of copper and silver nitrate is spontaneous.
Cu(s) + 2AgNO3(aq)
Cu(NO3)2(aq) + 2Ag(s)
The reverse reaction, in which silver metal is placed in the copper nitrate solution, is not spontaneous.
Which statement best describes the oxidizing and reducing abilities of the reactants?
D. Copper is a better oxidizing agent than silver and silver is a better reducing agent than copper.
15. In an expanded redox activity series, aluminum is located above iron. Which statement correctly predicts what will happen (or not happen) when these two metals and its cations interact?
A. Aluminum will act as the stronger reducing agent and iron will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of iron will increase. B. Aluminum will act as the stronger reducing agent and iron metal ion will act as the stronger oxidant. C. In the nonspontaneous reaction, the metals will not react because iron is a stronger reducing agent than aluminum.D. Iron will act as the stronger reducing agent and aluminum will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of aluminum will decrease.
Explanation / Answer
1. Which statement about oxidation numbers (or states) is not true
Answer D:The oxidation number gives you insight into where the electron rich and electron deficient areas (relative to individual atoms) of a molecule are located.
Which statement best describes the primary limitation of oxidation state (or oxidation number)?
Answer A. In molecules, electrons are not just in atomic orbitals. They are also in molecular orbitals. Therefore, oxidation states (or numbers) do not necessarily represent the electron reality for each atom.
The reaction of copper and silver nitrate is spontaneous.
Cu(s) + 2AgNO3(aq)
Cu(NO3)2(aq) + 2Ag(s)
The reverse reaction, in which silver metal is placed in the copper nitrate solution, is not spontaneous.
Which statement best describes the oxidizing and reducing abilities of the reactants?
Answer A.Silver is a better oxidizing agent than copper.
15. In an expanded redox activity series, aluminum is located above iron. Which statement correctly predicts what will happen (or not happen) when these two metals and its cations interact?
2Al + 3Fe^2+ + 6e^- => 2Al^3+ + 6e^- + 3Fe
Here Al will oxidized means acts as reducing agant.
Fe reduced which can act as oxidizing agent
Answer B. Aluminum will act as the stronger reducing agent and iron metal ion will act as the stronger oxidant.
Answer A. In molecules, electrons are not just in atomic orbitals. They are also in molecular orbitals. Therefore, oxidation states (or numbers) do not necessarily represent the electron reality for each atom.
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