K2SiO3→H2SiO3→SiO2→Si→SiCl4→Si→Ca2Si→SiH4→SiO2→CaSiO3→CaO

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The transformation process of K2SiO3 to CaO can be described as follows:

K2SiO3 (potassium silicate) is broken down to form H2SiO3 (dilute silicic acid).H2SiO3 undergoes dehydration to form SiO2 (silica).SiO2 is reduced to form Si (silicon).Si reacts with Cl2 to form SiCl4 (silicon tetrachloride).SiCl4 is again reduced to form Si.Si reacts with Ca to form Ca2Si (calcium silicide).Ca2Si further reacts with H2 to form SiH4 (silane).SiH4 undergoes oxidation to form SiO2.SiO2 reacts with Ca to form CaSiO3.Finally, CaSiO3 decomposes to form CaO (calcium oxide).

Therefore, the overall transformation process of K2SiO3 to CaO involves various chemical reactions resulting in the formation of different silicon compounds and eventually producing calcium oxide.