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본문내용
is attacked by hydrofluoric acid with the production of silicium fluoride
SiO2+ 4HF → SiF4↑+ 2H2O
SiF4 와 SiF62- 이 SiO2보다 더 안정하므로 반응이 진행된다
SiF4는 gas이며, 물에서 silice의 침전/fluosilicic acid (SiF)의 형성과 함께 분해된다
(the formed silicium fluoride is gaseous. in water, it decomposes with the precipitation of silice and with the formation of fluosilicic acid.)
(Ionic Equilibria in Analytical Chemistry 567p / https://books.google.co.kr/books?id=Rh3-BV9smfoC&pg=PA567&lpg=PA567&dq=SiO2+%2B+4HF+%E2%86%92+SiF4+%2B+2H2O&source=bl&ots=wgKOqyAkJr&sig=mfWsINET_JzptT4ahB_Wek-2isU&hl=ko&sa=X&ved=0ahUKEwjYl9uiptjTAhXGupQKHYENAswQ6AEIRTAG#v=onepage&q=SiO2%20%2B%204HF%20%E2%86%92%20SiF4%20%2B%202H2O&f=false)
Fluoride anions are so small, they can penetrate every material with relative ease and thus even dissolve glass; diffuse through gloves etc.
HF dissolves glass because SiF4 and SiF62- are more stable than SiO2, not because it can penetrate glass.
(https://www.reddit.com/r/askscience/comments/1pbocx/why_is_hydrofluoric_acid_hf_so_corrosive_if_it_is/)
It is a colourless solution that is highly corrosive, capable of dissolving many materials, especially oxides. Its ability to dissolve glass has been known since the 17th century, even before Carl Wilhelm Scheele prepared it in large quantities in 1771. Because of its high reactivity toward glass and moderate reactivity toward many metals,
(https://en.wikipedia.org/wiki/Hydrofluoric_acid)
조작 63 (조작 64의 하위과정으로 설명하면 될 것 같습니다. 조작 64 5번 과정이랑 동일)
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SO2 발생 확인
SiO2+ 4HF → SiF4↑+ 2H2O
SiF4 와 SiF62- 이 SiO2보다 더 안정하므로 반응이 진행된다
SiF4는 gas이며, 물에서 silice의 침전/fluosilicic acid (SiF)의 형성과 함께 분해된다
(the formed silicium fluoride is gaseous. in water, it decomposes with the precipitation of silice and with the formation of fluosilicic acid.)
(Ionic Equilibria in Analytical Chemistry 567p / https://books.google.co.kr/books?id=Rh3-BV9smfoC&pg=PA567&lpg=PA567&dq=SiO2+%2B+4HF+%E2%86%92+SiF4+%2B+2H2O&source=bl&ots=wgKOqyAkJr&sig=mfWsINET_JzptT4ahB_Wek-2isU&hl=ko&sa=X&ved=0ahUKEwjYl9uiptjTAhXGupQKHYENAswQ6AEIRTAG#v=onepage&q=SiO2%20%2B%204HF%20%E2%86%92%20SiF4%20%2B%202H2O&f=false)
Fluoride anions are so small, they can penetrate every material with relative ease and thus even dissolve glass; diffuse through gloves etc.
HF dissolves glass because SiF4 and SiF62- are more stable than SiO2, not because it can penetrate glass.
(https://www.reddit.com/r/askscience/comments/1pbocx/why_is_hydrofluoric_acid_hf_so_corrosive_if_it_is/)
It is a colourless solution that is highly corrosive, capable of dissolving many materials, especially oxides. Its ability to dissolve glass has been known since the 17th century, even before Carl Wilhelm Scheele prepared it in large quantities in 1771. Because of its high reactivity toward glass and moderate reactivity toward many metals,
(https://en.wikipedia.org/wiki/Hydrofluoric_acid)
조작 63 (조작 64의 하위과정으로 설명하면 될 것 같습니다. 조작 64 5번 과정이랑 동일)
-
SO2 발생 확인
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