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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
Wiki User
∙ 10y agodecomposition reactions and electrolysis, are endothermic reactions
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Why are exothermic reactions chemical reactions?
Exothermic reactions are chemical rections since these affects the composition and chemical properties of a matter and result in the formation of new substance. Example burning of coal , electrolysis of water.
A puddle of water evaporates is an example of exothermic or endothermic?
Evaporation is an endothermic process.
Name of the process that decomposes water?
Electrolysis.
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.
Is the solvation of borax in water an exothermic or endothermic process?
Neither
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.
The reaction of hydrogen and oxygen to form water is best described as?
Electrolysis is the process that divides water into oxygen and hydrogen through use of electricity.
A puddle of water evaporates is an example of exothermic or endothermic?
Evaporation is an endothermic process.
Why are exothermic reactions chemical reactions?
Exothermic reactions are chemical rections since these affects the composition and chemical properties of a matter and result in the formation of new substance. Example burning of coal , electrolysis of water.
Can a compound be broken down by electricity?
yes, for example water (H2O) can be separated into hydrogen and oxygen using electricity in a process called electrolysis
Are all spontaneous processes exothermic?
No. For example ammonium nitrate spontaneously dissolves in water. This is an endothermic process.
How do you prepare hydrogen from water at home?
by the process of electrolysis
Name of the process that decomposes water?
Electrolysis.
What is used as the anode in sodium chloride electrolysis?
For example titanium (electrolysis in water solution).
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.
Is ammonium chloride is an exothermic?
an exothermic what? If you dissolve it in water, it's an endothermic process, and will absorb heat.
