ENEM PPL 2021 - FUNÇÕES INORGÂNICAS

ENEM PPL 2021 - INORGANIC FUNCTIONS PROF: MICHEL FULL COURSE: www.professorferretto.com.br (Enem PPL 2021) An ancient way of producing one of the constituents of mortars is by heating the component materials of sambaquis, which are archaeological sites formed essentially by the remains of mollusks, to high temperatures. The thermal decomposition of the main substance of these archaeological sites results in the formation of only two compounds. One of them is a solid oxide and the other is a gaseous oxide. The reaction of the first with water results in the formation of Ca(OH)2 (aqueous), while the reaction of the second results in H2CO3 (aqueous). The formula of the main substance found in these archaeological sites is: a) CaO b) CaC2 c) CaCO3 d) Ca(HCO3)2 e) Ca(OH)HCO3