File:04. Добивање на аморфен силициум и магнезиум силицид.webm

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Македонски: Во експериментот е прикажано добивање на аморфен силициум (1) и магнезиум силицид (2), при редукција на иситнет песок со магнезиум во прав:
(1) SiO2(s) + 2Mg(s) = Si(s) + 2MgO(s); и
(2) 2Mg(s) + Si(s) = Mg2Si(s).

Реакцијата опишана со (1) се иницира со загревање, а потоа е самоодржувачка и силно егзоенергетска.

Осмислено и изведено од Марина Стојановска, Миха Буклески и Владимир Петрушевски, Институт за хемија, ПМФ, УКИМ, Скопје.
English: The experiment shows preparation of amorphous silicon (1) and magnesium silicide (2), upon reduction of powdered sand with magnesium powder:
(1) SiO2(s) + 2Mg(s) = Si(s) + 2MgO(s); and
(2) 2Mg(s) + Si(s) = Mg2Si(s).

The reaction described by (1) is initiated by heating; then it is self-sustained and is highly exoenergetic.

Planned and performed by Marina Stojanovska, Miha Bukleski and Vladimir Petruševski, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
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