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Breaking chemical bonds is always endothermic. 463 kJ/mole are required to break O-H bonds. There are two O-H bonds per water molecule, so one mole of water requires 926kJ to break all the bonds. this energy requirement is supplied by the electrical current.
Wiki User
∙ 10y ago
Electrolysis of water is not an exothermic process; it is an endothermic process because energy is required to break the bonds in water molecules and separate them into hydrogen and oxygen gases.
Wiki User
∙ 10y agodecomposition reactions and electrolysis, are endothermic reactions
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A puddle of water evaporates is an example of exothermic or endothermic?
Evaporation is an endothermic process.
What is the breakdown of water into hydrogen to oxygen is an example of?
The breakdown of water into hydrogen and oxygen is an example of a chemical reaction known as electrolysis. This process involves passing an electric current through water to split it into its constituent elements, hydrogen and oxygen gas.
Name of the process that decomposes water?
The process that decomposes water into hydrogen and oxygen gas is called electrolysis. It involves passing an electric current through water to split it into its constituent elements.
Is cooling hot water exothermic?
Cooling hot water is an exothermic process, as heat is released from the hot water as it cools down. Heat is transferred from the hot water to the surrounding environment during the cooling process.
Is the reaction of magnesium sulfate and water exothermic or endothermic?
It is not a chemical reaction, it is dissolution; this physical process is exothermic.
What is the name of a process by which water is broken down into hydrogen and oxygen?
It's an example of electrolysis. Not unwanted hair removal, but that does use the same process. Electrolysis is the process of breaking down compounds by running an electric current through them.
A puddle of water evaporates is an example of exothermic or endothermic?
Evaporation is an endothermic process.
What is the breakdown of water into hydrogen to oxygen is an example of?
The breakdown of water into hydrogen and oxygen is an example of a chemical reaction known as electrolysis. This process involves passing an electric current through water to split it into its constituent elements, hydrogen and oxygen gas.
What is used as the anode in sodium chloride electrolysis?
For example titanium (electrolysis in water solution).
How do you prepare hydrogen from water at home?
by the process of electrolysis
When sodium hydroxide is dissolved in water the temperature of the water increases. Is this endothermic or exothermic?
This process is exothermic because it releases heat energy into the surroundings.
Is salt dissolving in water an example of an endothermic reaction yes or no?
No. The dissolving of salt in water is an exothermic process because it releases energy in the form of heat.
What is an electrolysis in science?
Electrolysis (coming from "electro", meaning electricity, and "lysis", meaning to cut) is the process whereby electricity is used to break apart a substance into two different substances. For example, electrolysis of water produces its constituent elemental gases, hydrogen and oxygen by this process: 2H20 + (electricity) --> 2H2 + O2
Is the formation of water endothermic or exothermic?
The process is endothermic because the water is absorbing heat from the kettle. When energy (heat) is released as steam this is exothermic.
What is Freezing water exothermic or endothermic?
Freezing water is an exothermic process because it releases heat energy as water changes from a liquid to a solid state. Heat is given off during the process of water molecules forming an orderly arrangement in ice.
Name of the process that decomposes water?
The process that decomposes water into hydrogen and oxygen gas is called electrolysis. It involves passing an electric current through water to split it into its constituent elements.
Is ammonia solution and water an exothermic or endothermic reaction?
Dissolving ammonia in water is an exothermic process, meaning it releases heat to its surroundings.
