Cu-Ag cell
In the Daniel cell, the valencies of zinc and copper are the same, i.e., n=2. However, the electrode potential of a cell in which the valencies of the two metals used in the two half cells are not same e.g., The two half-cell reactions are: Two electrons are released by one Cu-atom a..
In the Daniel cell, the valencies of zinc and copper are the same, i.e., n=2. However, the electrode potential of a cell in which the valencies of the two metals used in the two half cells are not same e.g., The two half-cell reactions are: Two electrons are released by one Cu-atom a..Measurement of Electrode Potential of Cu2+Cu Electrode
In order to obtain a cell reaction one must know the oxidized and reduced species to determine the cathode and anode in the cell. In a galvanic cell the cathode is the positive electrode while the anode is the negative electrode. When the electrodes of this cell are connected to the voltmeter, rea..
In order to obtain a cell reaction one must know the oxidized and reduced species to determine the cathode and anode in the cell. In a galvanic cell the cathode is the positive electrode while the anode is the negative electrode. When the electrodes of this cell are connected to the voltmeter, rea..Reduction of Ores
The oxide obtained by calcination or roasting is then reduced by either carbon or hydrogen. Carbon is usually used in the form of coke, or carbon monoxide. Not all metallic oxides can be reduced by carbon or carbon monoxide. Thus, in order to extract metal from its ore the method adopted depends o..
Reductive Removal of Nitro Group
The nitro group can be removed from an aromatic ring via the following steps: i) reduction of nitro group to amine ii) diazotization of amine with HNO 2 iii) reductive removal of the diazonium group using sodium borohydride or hypophosphorus acid/Cu + mixtur..
The nitro group can be removed from an aromatic ring via the following steps: i) reduction of nitro group to amine ii) diazotization of amine with HNO 2 iii) reductive removal of the diazonium group using sodium borohydride or hypophosphorus acid/Cu + mixtur..Reduction by more electropositive metals (precipitation or hydrometallurgy)
This method is employed when leaching method had been used to concentrate the ore. The metals are obtained by reducing their ions in the solution as precipitates by a more electropositive metal. This method is also called as the hydrometallurgy method of reduction. For example, when a he..
This method is employed when leaching method had been used to concentrate the ore. The metals are obtained by reducing their ions in the solution as precipitates by a more electropositive metal. This method is also called as the hydrometallurgy method of reduction. For example, when a he..Solution
Given: Wattage = 100 W Voltage = 220V Since the electrolytic cell is connected in series, the same current flows through the cell. Time, t = 5h = 5 x 60 x 60s = 18000s So, Quantity of electricity passed, Q = I x t coulombs = 0.454 A x 18000 s = 8172 C For the reduction of Cu ..
Given: Wattage = 100 W Voltage = 220V Since the electrolytic cell is connected in series, the same current flows through the cell. Time, t = 5h = 5 x 60 x 60s = 18000s So, Quantity of electricity passed, Q = I x t coulombs = 0.454 A x 18000 s = 8172 C For the reduction of Cu ..Reducing agent
The substance which gives hydrogen for reduction is called a reducing agent. The substance which removes oxygen is also called a reducing agent. The substance which reduces the other substance is called a reducing agent. ..
The substance which gives hydrogen for reduction is called a reducing agent. The substance which removes oxygen is also called a reducing agent. The substance which reduces the other substance is called a reducing agent. ..Extracting Metals Low in the Activity Series
Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating. Reduction Using Heat Copper can also be obtained in a..
Metals that are low in the activity series are very un-reactive. The oxides of these metals can be reduced to metals by heating alone. For example, mercury is obtained from its ore, cinnabar (HgS), by the process of heating. Reduction Using Heat Copper can also be obtained in a..Galvanic Cells (Voltaic Cell)
It is a device used to convert the chemical energy produced in a redox reaction into electrical energy. Example: The redox reaction between Zn and CuSO 4 ..
It is a device used to convert the chemical energy produced in a redox reaction into electrical energy. Example: The redox reaction between Zn and CuSO 4 ..Predicting Feasibility of a Redox Reaction
From the E values of the two electrodes one can find out whether a given redox reaction is feasible or not. A redox reaction is feasible only if the species which has higher potential is reduced i.e., accepts the electrons and the species which has lower reduction potential is oxidized i..
From the E values of the two electrodes one can find out whether a given redox reaction is feasible or not. A redox reaction is feasible only if the species which has higher potential is reduced i.e., accepts the electrons and the species which has lower reduction potential is oxidized i..See what our Users say :
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