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Which electrode of a voltaic cell the cathode or the anode corresponds to the higher potential energy for the electrons?
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∙ 10y ago
Cathode
Wiki User
∙ 10y ago
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What is the negatively charged electrode of a cathode ray tube?
The negatively charged electrode of a cathode ray tube (CRT) is the cathode. The tube is a cathode ray tube, and electrons stream off the cathode, are accelerated across the evacuated space and "directed" either electromagnetically or electrostatically, and then strike the phosphor coating on the positively charged anode at a "location" determined by the "directing" elements.
How are cathode rays originated?
its negatively charged particles of matter,Thomson knew that opposites attract but these the positive charged anode,so he reasoned that the paticles must be negatively charged! : )! Wooooo! Go J.J Thomson
Cathode rays were shown to be a stream of?
Cathode rays are electrons.
What is meant by anode and cathode?
Anode is positive electrode which attracts the negative anions while cathode is the negative electrode which attracts the positive cations during electrolysis.
I don't understand. What are anodes and cathodes Positive or Negative I keep seeing different answers everywhere Thanks.?
It can be complicated depending on the type of cell one is looking at. However, here is my simple explanation.The anode is the electrode where the oxidation reaction takes place, and oxidation is the loss of electrons, so in a galvanic cell the anode is a source of free electrons and so it is negatively charged.The cathode is the electrode where reduction takes place, and reduction is the gain of electrons, so in a galvanic cell the cathode is positively charge and ready to accept negatively charged electrons.Now, the anode isn't always negative and the cathode isn't always positive. It has to do with the direction of current flow (anode = current in, cathode = current out). In an electrolytic cell, the charges on the anode and the cathode are reversed from that seen in a galvanic cell.
Difference between direct and indirect cathode ray?
In a directly heated cathode, the filament is the cathode and emits the electrons. In an indirectly heated cathode, the filament or heater heats a separate metal cathode electrode which emits the electrons.
What type of electrode is a cold cathode?
Cold cathode is a cathode, an electrode that emits electrons, which is not electrically heated by an element. Cold cathodes are used in gas discharge lamps such as neon lamps and discharge tubes.
What is cu electrode?
An electrode is an electric conductor, usually metals. A Cu electrode means copper electrode.In a voltaic Zn-Cu cell, or battery, (a spontaneous reaction, so the voltage is always positive) it consists of two electrodes in which each of them is immersed in their designated electrolytic solution. When the spontaneous reaction occurs, electrons get attracted to the cathode and make it negatively charged. Meanwhile, electrons get farther from the anode, making it positively charged.cathode=positiveanode=negativehow do you identify which is anode/cathode?Zn2+ + 2e- --> Zn(s) // V=-0.76Cu2+ + 2e- --> Cu(s) // V=+0.34A cathode is the electrode with which the reduction, or gaining of electrons, takes place. Whichever has the higher potential to gain electrons will serve as a cathode. The more positively charged an atom is, then the more it is likely to attract electrons.In this case, the cathode is the copper.Anode is the opposite of cathode.
Where did the electrons from cathode ray come from?
In a cathode ray tube (CRT), the particles, which are electrons, originate at the heated cathode, becoming the so-called cathode rays. The electrons stream off the cathode and rush over to the anode.
Stream of electrons produced at the negative electrode of a tube containing a gas at a low pressure?
cathode ray
Name of one electrode and say is positive or negative?
The Cathode is the negative electrode; the anode is the positive electrode
What is the negatively charged electrode of a cathode ray tube?
The negatively charged electrode of a cathode ray tube (CRT) is the cathode. The tube is a cathode ray tube, and electrons stream off the cathode, are accelerated across the evacuated space and "directed" either electromagnetically or electrostatically, and then strike the phosphor coating on the positively charged anode at a "location" determined by the "directing" elements.
What is a positive electrode?
A positive electrode is a cathode. A negative electrode is an anode.An anode is positively charged, while a cathode is negatively charged.
Are cathode rays electromagnetic waves?
Cathode rays are not electromagnetic rays because the cathode ray is a beam of electrons that travel from the negatively charged to positively charged end of a vacuum tube, across a voltage difference between the electrodes placed at each end.The electrode at the negative end is called a cathode; the electrode at the positive end is called an anode.Since electrons are repelled by the negative charge, the cathode is seen as the "source" of the cathode ray in the vacuum chamber.
A more positive value for electrode potential means that the electrode is more likely to be a?
A more positive reduction potential (Eored) means that substance will be reduced, which occurs at the cathode. A more positive oxidation potential (Eoox) means that substance will be oxidized and occur at the anode.
Is it true that Electrons were discovered when an electric current was passed through gases at low pressures?
Yes, Sir J.J.Thompson did exactly that. ( although at that time the terms used for these phenomena were different). In 1897, Thompson heated a metal to produce cathode rays or electrons. These electrons were attracted towards an anode by providing a potential difference between the two electrodes. Between the cathode and electrode was air at very low pressure which did not stop these cathode rays. Sir Thompson studied these beams in the space between the anode and cathode.
Is Standard Calomel Electrode can act as cathode?
SCE can act as both anode and cathode according to the nature of other electrode.
