Elemental silicon is oxidized by O2 to give a compound
which dissolves in molten Na2CO3. When this solution is
treated with aqueous hydrochloric acid, a precipitate
forms. What is the precipitate?
(A) SiH4 (B) SiCO3 (C) SiO2 (D) SiCl4
The answer is (C). I'm just very confused about what happens here. I thought that after elemental silicon is oxidized (the first step), SiO2 would be produced...but I have no idea if that's correct. I don't know what the reaction with HCl has to do with anything either. Could someone guide me through what happens after each reaction? Thanks in advance!
which dissolves in molten Na2CO3. When this solution is
treated with aqueous hydrochloric acid, a precipitate
forms. What is the precipitate?
(A) SiH4 (B) SiCO3 (C) SiO2 (D) SiCl4
The answer is (C). I'm just very confused about what happens here. I thought that after elemental silicon is oxidized (the first step), SiO2 would be produced...but I have no idea if that's correct. I don't know what the reaction with HCl has to do with anything either. Could someone guide me through what happens after each reaction? Thanks in advance!