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Why does the cathode gain in mass during the purification of copper by electrolysis?
Because the cathode is where reduction takes place, meaning the it gains electrons. When it gains electrons, it attracts the copper cation (Cu^2+) and as the copper cation reaches the cathode, it picks up the electrons from the cathode, and is deposited as solid copper (Cu). This results in the cathode gaining mass over time.
What else can I help you with?
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.
Does anode lose weight and cathode increase in electroplating?
yes, the weight of anode is decreased & added to the weight of the cathode during electroplating
What is meaning of SK value in transformer oil?
It shows the Purification during the filtration of crude oil.
Why is copper loss negligible during open circuit test?
Copper losses are energy losses from the windings, due to the currents passing through them. During an open-circuit test, there is no secondary current (so no secondary copper losses) and the primary current is very low (so the primary copper losses are minimum).
What is the importance of DC current flow instead of AC during electroplating process?
Electroplating involves moving metal from one electrode to another, through a conductive solution. Typically a metal at the anode will lose an electron, become dissolved in solution, and then move in the solution towards the cathode. Once reaching the cathode, the metal ion gains electron(s) and is thus deposited at the cathode. With AC, the metal ions would just move back and forth in the solution, generating heat but no electroplating.
When copper is purified by electrolysis which electrode do you think that the pure copper collects at?
Pure copper collects at the cathode during electrolysis because copper ions are reduced at the cathode, gaining electrons and forming solid copper.
What happens at the anode during purification of copper?
At the anode during purification of copper through electrolysis, copper atoms lose electrons to become copper ions (Cu2+), which then dissolve into the electrolyte solution. This process allows impurities to remain behind at the anode, resulting in the purification of copper.
What would the cathode be in a nickel and copper electrolytic?
Ni(s)
How temperature mass of copper in electrolysis at cathode?
At the cathode during electrolysis of copper, copper cations (Cu^2+) gain electrons and are reduced to form solid copper metal. The mass of copper deposited at the cathode is directly proportional to the number of electrons transferred and the current flowing through the circuit over time. However, the temperature of the system does not have a direct impact on the mass of copper deposited at the cathode.
What would the cathode be in nickel and copper electrolytic cell?
Ni(s)
Where does copper collect during electrolysis?
The cathode, where the +ions in solution accept electrons and become neutral metal atoms.
Why does the blue colour remains blue during electrolysis of copper sulphate solution using copper electrodes?
During electrolysis of copper sulfate solution using copper electrodes, the blue color of the solution remains because copper ions from the copper sulfate solution plate onto the cathode, replacing the copper atoms in the electrode. This does not change the color of the solution as the copper ions remain in solution, maintaining the blue color.
Why the blue colour of copper chloride fades during electrolysis?
The blue color of copper(II) chloride fades during electrolysis because copper ions (Cu²⁺) are reduced to copper atoms (Cu) at the cathode. This causes the copper ions in solution to decrease, resulting in the fading of the blue color.
Which electrode do the Copper ions move towards and why?
Copper ions in a solution typically move towards the cathode electrode during electrolysis, as they gain electrons and are reduced to form solid copper. This process helps to plate the cathode with a layer of copper metal.
Useful amounts of copper can be isolated during a process called electrolysis true or false?
True. Copper can be isolated in useful amounts during electrolysis, where an electric current is passed through a solution containing copper ions, causing them to deposit on the cathode. This process is commonly used in industries to extract and purify copper.
An electrode at which aluminium is deposited during electrolysis of alumina?
Cathode is the electrode at which aluminium is deposited during electrolysis of alumina. Aluminum ions (Al3+) are reduced to form solid aluminum metal at the cathode.
Why does the color of copper sulfate solution changes during electrolysis?
The color change in copper sulfate solution during electrolysis occurs because copper ions from the solution are attracted to the cathode, where they are reduced to form solid copper metal. This causes the solution to turn from blue to clear as the copper ions are removed.
