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SCE can act as both anode and cathode according to the nature of other electrode.

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12y ago
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6mo ago

Yes, the Standard Calomel Electrode (SCE) can act as a cathode in certain electrochemical cells. When connected to a suitable anode in a galvanic cell or connected to a positive terminal in an electrolytic cell, the SCE can gain electrons and undergo reduction at its surface.

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Q: Is Standard Calomel Electrode can act as cathode?
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Why mercury placed at the bottom of calomel electrode?

Mercury is placed at the bottom of a calomel electrode to provide a stable and well-defined interface between the electrode and the electrolyte solution. This helps to maintain a consistent potential at the electrode/solution interface, making it a reliable reference electrode in electrochemical measurements.


What is standard cell notion of a galvanic cell made with zinc and aluminum?

In a standard galvanic cell using zinc and aluminum, the zinc metal will act as the anode and the aluminum metal will act as the cathode. Zinc will undergo oxidation at the anode, releasing electrons which flow through the external circuit to the cathode where aluminum will undergo reduction. This flow of electrons creates an electrical current.


Is iron a anode or cathode?

Iron can serve as both an anode and a cathode, depending on the specific electrochemical reaction or setup. In general, iron tends to act as an anode when it undergoes oxidation and releases electrons, whereas it acts as a cathode when it undergoes reduction and gains electrons.


Why does the graphite rod act as a positive terminal where as the zinc casing a negative terminal?

The graphite rod acts as the positive terminal because it is the cathode where reduction reactions occur, while the zinc casing acts as the negative terminal because it is the anode where oxidation reactions occur. This is due to their differences in electrode potential and their roles in the electrochemical reaction process.


Is electrode and conductor same?

No, an electrode is a device for conducting electricity, typically used to make contact with a nonmetallic part of a circuit. A conductor is a material that allows the flow of electrical current. While an electrode can act as a conductor, not all conductors serve as electrodes.

Related questions

Why mercury placed at the bottom of calomel electrode?

Mercury is placed at the bottom of a calomel electrode to provide a stable and well-defined interface between the electrode and the electrolyte solution. This helps to maintain a consistent potential at the electrode/solution interface, making it a reliable reference electrode in electrochemical measurements.


What is the cathode of a galvanic cell made with magnesium and gold?

the gold electrode


What is standard cell notion of a galvanic cell made with zinc and aluminum?

In a standard galvanic cell using zinc and aluminum, the zinc metal will act as the anode and the aluminum metal will act as the cathode. Zinc will undergo oxidation at the anode, releasing electrons which flow through the external circuit to the cathode where aluminum will undergo reduction. This flow of electrons creates an electrical current.


What would the cathode be in a nickel and copper electrolyte cell?

Ni(s)


Is iron a anode or cathode?

Iron can serve as both an anode and a cathode, depending on the specific electrochemical reaction or setup. In general, iron tends to act as an anode when it undergoes oxidation and releases electrons, whereas it acts as a cathode when it undergoes reduction and gains electrons.


Why do you say cathode rays are electrons?

Because -- they are? Or, more specifically, because the particles within cathode rays act exactly like electrons. They either ARE electrons or they do a REAL good job of imitating them.


Is a zinc anode acts the terminal?

No, a zinc anode does not act as the terminal in a circuit. A zinc anode is used to protect a metal structure from corrosion by sacrificing itself, while the terminal in a circuit is the source of electrical energy that drives the current flow.


What is triode valve?

A triode valve is a three-electrode electronic device. It can amplify, oscillate or act a a switch. Most commonly, its three electrodes are contained in a completely-evacuated envelope (a near-perfect vacuum). The envelope may be of glass, ceramic or a metal-glass or metal-ceramic construction. Most commonly, the electrons needed for operation are produced by a heated filament or cathode. It is possible to do without the filament/cathode, but such devices are uncommon. The heated filament/cathode defines this as a *thermionic* triode. Some triodes do not use a pure vacuum. Instead, they use low-pressure gas, or mercury vapour, to allow them to operate at higher currents and lower voltage drops than vacuum triodes.


Why does the graphite rod act as a positive terminal where as the zinc casing a negative terminal?

The graphite rod acts as the positive terminal because it is the cathode where reduction reactions occur, while the zinc casing acts as the negative terminal because it is the anode where oxidation reactions occur. This is due to their differences in electrode potential and their roles in the electrochemical reaction process.


Can you call forward bias voltage as positive voltage?

it is not necessary that always positive voltage should act as a forward bias voltage , it is the potential difference between cathode and anode that makes it forward or reverse biased .it the anode(p- doped material) positive with respect to cathode(n- doped material) --> forward biasedit the anode(p- doped material) negative with respect to cathode(n- doped material) --> reverse biasedex.anode - 5v cathode - 3vanode - 1v cathode - -2vboth the examples are forward biased.


What is registration officer?

Registration officer is nothing but THE ACT OF (ENROLING OFFICER) OR The act of adjusting something to match a standard (Checking the standard matching Officer)


What is a registration officer?

Registration officer is nothing but THE ACT OF (ENROLING OFFICER) OR The act of adjusting something to match a standard (Checking the standard matching Officer)