Electrolysis cell

the difference between Galvanic cell and electrolyte cell

the eletrolytic cell consumes electrical energy to drive a reaction, while the galvanic cell generates electrical energy from spontaneous chemical reactions.

Competition of electrodes

the water present in the electrolyte interfere the desire reaction of the electrodes, because it have a strongest oxidising agent which cause it early reactive with the electrodes at the cathode

Molten ionic compound and aqueous solution

Molten ionic compound in the electrolyte early for the desire reaction since there is no water molecular to interfere. In contrast, an aqueous solution introduces water molecules that can react with the electrodes, potentially hindering the desired electrochemical reaction.

outline why the production of hydrogen through the electrolysis of water is currently not a green process

the electrolysis of water use electricity that provide from the predominantly at a power station or natural gas which is a type of fossil fuel. the combustion fossil fuel such as natural gas can involved in the produce co2 which is the key greenhouse gas

evaluate why steam reforming process impact to environment

the process of steam reforming in the first stage require energy, the energy provide from the combustion of fossil fuel which require the temperature to 700-1000. and the seconds involving the production of CO2 a key greenhouse gas

what Method use to reduce the greenhouse gas emission from the steam reforming

the gas can reduce through the use Carbon capture and storage technology

Disadvantages of molten electrolyte

Disadvantages of molten electrolyte in the cell can requires more energy. the energy must be use to maintain the electrolyte in a molten stage and at the temperature for the electrolysis to proceed efficiently

Heat in electrolyte

heat energy is produce when an electric current pass through the resistor. the electrolyte provide a resistance to the flow of electrical allow the electrolyte to maintain in molten stage

The use of the Calcium ion in the electrolysis

the use of Calcium ion can reduce the melting point of the sodium calcium, which can reduce the cost of energy used

An iron mesh screen

used to separate the product at the anode and cathode apart because Cl2 is strongest oxidising agent and Na is strongest reducing agent. there must no contact between them and they must continuously removed from the cell.

Membrane

help to prevent contact between the reactive products.

made from the polymer that only allow the position ion to pass through

the polymer prevent mixing of the product formed one electrode chamber to the other

chloride and hydroxide are unable to move through the membrane. this result in a very pure sodium hydroxide with a very little chloride contaminated

reactive electrodes

electrodes that participate in electrochemical reactions, facilitating the transfer of electrons and ions between the electrolyte and the electrode surfaces.

Adding the sodium calcium

low the melting point of the electrolyte, to improve the efficiency of the process

list the key that use to determine the amount of the product

charge of ion involved in the electrode reaction

current flowing through the cell

length of the time that the current flow

what faradays law learn about

the relationship between the mass formed at cathode and quantity of charge that passes through the cell

faradays equation

for 1 mole of the substance to be deposited at the electrodes, the passage of 1,2,3 or other whole number of mole of electron is requires

the mass of metal formed at cathode is directly proportional to the electrical charge passed through the cell