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I'm not completely certain about this but I'm convinced that an anode actually loses mass.
For example, in the cell equations for an Ag(s) cathode being dipped into an AgNO3 solution, connected to a Cu(s) anode being dipped into a Cu(NO3)2 solition,
2Ag+(aq) + 2e- -> 2Ag(s) (Cathode 1/2 reaction, reduction)
Cu(s) -> Cu2+(aq) +2e- (Anode 1/2 reaction, oxidation)
, the cathode reaction is taking the Ag+(aq) ions in the AgNO3- solution and turning them into solid silver, Ag(s). Therefore, I believe it is correct to assume that solid silver is being formed in the cathode solution.
The anode half reaction however is the opposite, taking a solid copper atom, Cu(s), and turning it into an aqueous copper cation, Cu2+(aq). This leads me to believe that the copper rod (anode) is losing mass.
So, I believe the cathode is gaining mass and the anode is losing mass.
What else can I help you with?
How does the mass to charge ratio of cathode rays compare to that of anode rays?
it varies because charge to mass ratio of positive rays depends upon gases used in the discharge tube.its varies from gas to gas.
The em value of cathode rays is always constant but the em value of positive rays is not constant why?
Anode rays differ from cathode rays in several aspects and their specific charge(charge/mass or e/m ratio) is an important feature. The reason lies in how anode rays are produced. Anode rays are produced when a gas at low pressure is subjected to a high voltage(10,000 Volts). Under these conditions, the atoms of the gas get ionized, i.e. they lose some electrons and thus become cations(positive ions). It is a stream of these positive ions that become 'anode rays'. However, the atomic masses of different gases are different and hence, the mass of anode ray particles varies when you use different gases in the discharge tube and hence, the charge/mass ratio also varies. Whereas, in the case of cathode rays, the cathode ray particles are nothing but electrons. Their charge and mass is constant no matter what gas you use in the discharge tube. So, their charge/mass ratio remains constant. (ANSWER BY RIZWAN FROM PAKISTAN)
Name of one electrode and say is positive or negative?
The Cathode is the negative electrode; the anode is the positive electrode
What happens at the anode in an electrolytic cell?
oxidation
In electrolysis electrons move between two metal strips called?
Electrodes, the positive side is called the Cathode and the Negative side is called the Anode.The anode and cathode. The anode is positively charged and the cathode is negative.
How and why the mass of the anode and cathode change during the electrolysis?
During electrolysis, the mass of the anode decreases while the mass of the cathode increases. At the anode, oxidation occurs, causing the loss of mass as metal ions dissolve into the solution. Conversely, at the cathode, reduction takes place, where cations from the solution gain electrons and deposit as solid metal, thereby increasing the mass. This mass transfer is driven by the flow of electric current, facilitating the reactions at each electrode.
How does the anode lose mass during the process of electrolysis?
During electrolysis, the anode loses mass because it releases electrons, which causes the metal ions in the anode to turn into metal atoms and dissolve into the electrolyte solution.
What happens to the mass of the metal anode as the cell continues to operate?
It depends on the specifics of the cell, but in most simple galvanic cells, the anode slowly dissolves into solution.
How does the mass to charge ratio of cathode rays compare to that of anode rays?
it varies because charge to mass ratio of positive rays depends upon gases used in the discharge tube.its varies from gas to gas.
What is the ion release in between cathode and anode?
Ions are released at the anode during oxidation, and they move towards the cathode through the electrolyte. At the cathode, the ions gain electrons and are reduced. This process results in the transfer of ions between the cathode and anode.
What does not gain or lose mass?
a closed system will not gain or lose mass
What is anode resistance of triode?
Anode resistance of a triode, also known as plate resistance, refers to the dynamic resistance seen at the anode (or plate) terminal of the triode in response to changes in anode voltage while keeping the control grid voltage constant. It is a measure of how much the anode current changes with a change in anode voltage. This resistance is crucial for determining the voltage gain of the triode, as a higher anode resistance typically leads to greater amplification. It is usually denoted as ( r_a ) and can vary with the operating point of the triode.
What happens to the anode in an electrochemical cell?
it loses mass
Cations are attracted to cathod or anode?
DNA is neither cathode or anode, but it is negatively charged, so the DNA molecules will rn from anode to cathode
What types of anode?
the two types of anode is stationary anode and rotating anode
Why anode gets thinner after electroplating?
During electroplating, metal ions from the anode are transferred to the cathode where they deposit onto the object being plated. This transfer of metal ions results in the anode losing some of its mass, causing it to become thinner over time as the metal is gradually depleted.
What is always true during the operation of a voltaic cell?
During the operation of a voltaic cell, electrons flow from the anode to the cathode through an external circuit, generating an electric current. The anode undergoes oxidation (loses electrons), while the cathode undergoes reduction (gains electrons). This process is driven by a redox reaction occurring within the cell.
