Essays Tagged: "Cathode"
Chemistry electrolysis coursework
olved into the solution from the anode while positive copper ions (cations) being discharged at the cathode. Normally anions are discharged at the anode.The experiment carried out aimed to monitor the ... ed. It was considered that the following factors could affect the deposition of Copper metal on the cathode.1. Time2. Current3. Temperature4. Molarity/Concentration of Solution5. Quantity of Solution6 ...
Subjects: Science Essays > Chemistry
Investigating the rate of electrolysis. An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions.
which has a positive charge while positive copper, ions (cations) are also being discharged at the cathode which has a negative charge. Normally anions, which have a negative charge, are discharged a ... iment, which will hopefully change the rate of reaction and also the deposit of copper metal at the cathode.These variables could include:· Voltage· Concentration of solution/ Quantity o ...
Subjects: Science Essays > Chemistry
What Is Electrolysis
eak current between it and a surrounding metal grille. Corrosive salts move slowly from the object (cathode) to the grille (anode), leaving the artefact clean.ElectrolysisIn chemistry, the production ... ting in the migration of ions to the electrodes: positive ions (cations) to the negative electrode (cathode) and negative ions (anions) to the positive electrode (anode). During electrolysis, the ions ...
Subjects: Science Essays > Physics
Copper: Environmental Effects of Copper and How Copper is Processed
ks containing a solution of copper sulphate and sulphuric acid. They are suspended alternately with cathodes, which are thin sheets of pure copper. Most o the remaining impuritities in the anodes sett ... es in the anodes settle to the bottom of the tank and form a sludge. After electrolysis, the copper cathodes are usually melted in a furnace and cast into various shapes and sizes.
Subjects: Science Essays > Chemistry
Electrolysis.
Investigation to find out the Effect of Current on the Mass Deposited at the CathodeThe experiment I will be carrying out is aimed to observe the amount of Copper (Cu) metal dep ... meter - for measuring the amount of current flowing though the circuit.3. Electrodes [Anode (+) and Cathode (-)]4. Variable Resistor - for changing the amount of current uses.5. Circuit wires - for co ... ves to it.Prediction.I predict that the higher the current the more copper will be deposited at the cathode. The reasons for my prediction are that a higher current can carry more Ions so can deposit ...
Subjects: Science Essays > Chemistry
Anode tube
lass in order to stand high temperatures. Also acts as an electrical insulator between the negative cathode and positive anode. Contains the vaccum and supports the electrodes.Vaccum; All air is exclu ... with any gas atoms which would be ionized and reduce the kinetic energy of the thermionic electrons.Cathode; Consists of a coiled filament of tungsten wire enclosed in a focusing hood of focusing cup. ...
Subjects: Science Essays > Physics
Compare the use of a dry cell battery with button cell battery in terms of the chemistry, cost and practicality, impact on society and environment.
m chloride and a mixture of powdered carbon and manganese dioxide around a carbon rod, which is the cathode. Initially no zinc chloride is present, but as the cell is used zinc ions are formed and amm ... scharged.The reaction at the anode, the zinc cylinder is: Zn(s) → Zn2+(aq) + 2e-At carbon rod (cathode), reduction half reaction is: MnO2(s)+ NH4+ + H2O(l) + e- → Mn(OH) 3 + NH3This dry cell ...
Subjects: Science Essays > Chemistry
GCSE Chemistry Revision Notes (all the hard stuff)
ChemistryElectrolysis-Anode - + - non-metal (anions)-Cathode - - - metal (cations)-In an aqueous solution with a reactive metal (Al or G1, G2 element) hy ... tions)-In an aqueous solution with a reactive metal (Al or G1, G2 element) hydrogen is given at the cathode instead of the metal --> in order to extract the metal solution must be molten, not disso ... at the anode4OH- + 4e- -->2H2O + 2O2-Active electrodes (made of metal) - the anode's loss is the cathode's gainSalts equationsNote: An alkali is a base that will dissolve in waterAll metal oxides a ...
Subjects: Science Essays > Chemistry
ELECTROCHEMISTRY
treated with wax or a lacquer containing graphite.- The electroplated object is used as the cathode of an electrolytic cell and the anode is usually the electroplating metal.- silver c ... s.- the electrode half-reactions are: Anode (oxidation): Ag(s) + 2CN-(aq) Ag(CN)2-(aq) + e- Cathode (reduction): Ag(CN)2-(aq) + e- Ag(s) + 2CN-(aq) The end result is the transfer of silver fro ...
Subjects: Science Essays > Chemistry
The application of Electrolysis?
alled an anode and the negative junction (connected to the negative end of the battery) is called a cathode. The dissolved or molten ionic compound which is to be split into its constituents is called ... tive or positive charge. Since unlike charges attract each other, the positive ions move toward the cathode (negative electrode) and are called cations and the negative ions move towards the anode (po ...
Subjects: Science Essays > Chemistry
Experiment: Galvanic Cells
series, the higher the cell voltage (potentialdifference). Positive ions (cations) will move to the cathode and the negative ions (anions)will move to the anode.Plan: Collect the required materials an ... ve metal. We can infer from my data that electrons from the metal always flow from the anode to the cathode in the external circuit.Evaluation: When we evaluate this experiment, three things to consid ...
Subjects: Science Essays > Chemistry
Nickel metal hydrive battery for electric vehical
ial that can allow electrochemical storage and release of hydrogen during charge and discharge. The cathode electrode is reversible between Ni(OH)2 and nickel oxyhydroxide (NiOOH). At both electrode, ...
Subjects: Science Essays > Chemistry
Investigating a factor that affects the volume of H2 at the cathode in an electrolysis reaction
the electrolyte by the ions as they transfer to the electrodes. Electrons always flow from anode to cathode.AimInvestigate a factor that affects the volume of H2 at the cathode in an electrolysis reac ... will affect the volume of H2. I guess that as the voltage becomes stronger the volume of H2 at the cathode will increase. This is because how I stated in the introduction, an electrolysis cell uses a ...
Subjects: Science Essays > Chemistry