Water decomposes in presence of electricity into H and O , this process is called

Explanation

Explanation: TYPE PROCESS Electrolysis Electrolysis is defined as a process of decomposing ionic compounds into their elements by passing a direct electric current through the compound in a fluid form. The cations are reduced at the cathode and anions are oxidized at the anode. 2H 2O → 2H 2+ O 2 Displacement Reaction A displacement reaction is the one wherein the atom or set of atoms is displaced by another atom in a molecule. It is two types- I) Single decomposition A + B-C → A-B + C Cl 2+ 2NaBr → 2NaCl + Br 2 II) Double decomposition A-B + C-D → A-D + C-B BaCl 2+ Na 2SO 4→ BaSO 4+ 2NaCl Thermal Decomposition A decomposition reaction is activated by thermal energy. Generally, it is endothermic as energy is required to break the chemical bond to separate constituent elements. A → B + C CaCO 3→ CaO + CO 2 Photochemical Decomposition It is a type of decomposition reaction in which the reactant is broken down to its constituents by photons. Photolysis occurs in the atmosphere where the Ozone molecule is broken down into an oxygen molecule and oxygen atom. O 3+ hv → O 2+ O