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What is the standard reduction potential E for the half-reaction Al3 (aq) 3e Al(s)?
-1.68 V
What is the standard electrode potential of Nitrate?
The standard electrode potential of nitrate (NO3-) is +0.96 V. This value is for the reduction half-reaction of nitrate to nitrite under standard conditions.
How is an oxidation half reaction written using the reduction potential chart?
To write an oxidation half reaction using the reduction potential chart, simply reverse the reduction half reaction from the chart. This means changing the sign of the reduction potential value and flipping the direction of the reaction arrow. Remember to balance the reaction by adding any necessary electrons.
What is the voltage for the non spontaneous reaction between silver Ag and copper Cu and their ions?
The standard cell potential for the non-spontaneous reaction between silver and copper ions (Ag+ and Cu2+) is determined by subtracting the reduction potential of Ag+ from that of Cu2+. The cell potential would be negative as the reaction is non-spontaneous, indicating that an external voltage larger than the calculated value would be needed to drive the reaction in the reverse direction.
A voltaic cell is made of copper and aluminum electrodes What is the emf of this cell?
The EMF of a copper-aluminum voltaic cell can be determined by the standard reduction potential of each metal. Copper has a higher standard reduction potential than aluminum, so the cell will have a positive EMF. The exact value can be determined by calculating the difference between the reduction potentials of copper and aluminum.
What is the standard reduction potential E for the half-reaction Al3 (aq) 3e Al(s)?
-1.68 V
What is the standard electrode potential of Nitrate?
The standard electrode potential of nitrate (NO3-) is +0.96 V. This value is for the reduction half-reaction of nitrate to nitrite under standard conditions.
Why in the standard potential for an oxidation reduction reaction not multiplied by the coefficient?
Because standard potential is not an additive property. That is, the standard potential for a reaction will always been a certain value, no matter if you have one mol or a billion mols. Each mol has the same potential and undergoes the reaction independent of all the other mols.
What is the total reduction potential of a cell i which potassium is reduced and copper is oxidized?
The total reduction potential of a cell can be calculated by subtracting the standard reduction potential of the oxidation half-reaction from that of the reduction half-reaction. For potassium (K) being reduced, the standard reduction potential is approximately -2.93 V, while for copper (Cu) being oxidized, its reduction potential is +0.34 V. Thus, the total reduction potential of the cell is calculated as: E_cell = E_reduction (Cu) - E_reduction (K) = 0.34 V - (-2.93 V) = 3.27 V. This positive value indicates that the cell reaction is spontaneous.
What is the standard reduction potential E and deg for the half-reaction Al3 plus (aq) plus 3e- Al(s)?
The standard reduction potential (E°) for the half-reaction ( \text{Al}^{3+}(aq) + 3e^- \rightarrow \text{Al}(s) ) is approximately -1.66 V. This negative value indicates that the reduction of aluminum ions to aluminum metal is not favored under standard conditions. The standard reduction potential is an essential parameter in electrochemistry, influencing the direction of redox reactions.
What does a negative value for the standard potential indicate?
the negative value for a standard potential indicates that the reaction is not spontaneous.
How is an oxidation half-reaction written using the reduction potential chart How is the oxidation potential voltage determined?
To write an oxidation half-reaction using a reduction potential chart, you first identify the species being oxidized and locate its reduction potential on the chart. Since oxidation is the reverse of reduction, you invert the sign of the reduction potential to obtain the oxidation potential. The oxidation potential voltage can be determined by taking the negative of the corresponding reduction potential value; this value indicates the tendency of the species to lose electrons.
What is the standard reduction potential E for the half-reaction Al3 plus (aq) plus 3e Al(s)?
The standard reduction potential (E°) for the half-reaction ( \text{Al}^{3+} (aq) + 3e^- \rightarrow \text{Al}(s) ) is approximately -1.66 V. This negative value indicates that the reduction of aluminum ions to aluminum metal is not favorable under standard conditions. Therefore, aluminum is more likely to oxidize than to be reduced.
What is the standard reduction potential E for the half reaction mf2 plus plus 2e - mg?
The standard reduction potential (E°) for the half-reaction ( \text{Mg}^{2+} + 2e^- \rightarrow \text{Mg} ) is approximately -2.37 V. This indicates that magnesium ions are reduced to magnesium metal, but the reaction is not favorable under standard conditions due to its negative potential. The value reflects magnesium's strong tendency to lose electrons and form cations, characteristic of its placement in the reactivity series of metals.
What is the standard reduction potential E for the half reaction Al3 aq 3e- -- AIs?
The standard reduction potential (E°) for the half-reaction ( \text{Al}^{3+} + 3e^- \rightarrow \text{Al} ) is approximately -1.66 V. This negative value indicates that the reduction of aluminum ions to aluminum metal is not favorable under standard conditions. Consequently, aluminum tends to oxidize rather than reduce, making it an effective reducing agent in many chemical reactions.
How is an oxidation half reaction written using the reduction potential chart?
To write an oxidation half reaction using the reduction potential chart, simply reverse the reduction half reaction from the chart. This means changing the sign of the reduction potential value and flipping the direction of the reaction arrow. Remember to balance the reaction by adding any necessary electrons.
What is the overall voltage for the nonspontaneous redox reduction involving Mg and Cu and their ions?
The overall voltage for the nonspontaneous redox reaction involving magnesium (Mg) and copper (Cu) can be determined using standard reduction potentials. The reduction potential for Cu²⁺ to Cu is +0.34 V, while the oxidation potential for Mg to Mg²⁺ is -2.37 V. The overall cell potential (E°cell) is calculated by adding the reduction potential of the cathode (Cu) to the oxidation potential of the anode (Mg), resulting in E°cell = 0.34 V - 2.37 V = -2.03 V. Since the value is negative, the reaction is nonspontaneous under standard conditions.
