[ 6L  6L2 → 1D 6L2  + 6L2 → 6L2  6L → → →
t
6L − H = 6L +
,
1. Si + O2 = SiO2; 2
+ H = 2
−
t
2. SiO2 + 2NaOH l\ = Na2SiO3 + H2O↑; 3. Na2SiO3 + H2SO4 = H2SiO3↓ + Na2SO4; t
4. H2SiO3 = H2O + SiO2. t
5. SiO2 + 2Mg = Si + 2MgO.
<hijhk Dhg_qgh `_ wlh kh_^bg_gb_ ² hdkb^ dj_fgby (IV).
<hijhk Hlebqbl_evghc hkh[_gghklvx kl_deZ y\ey_lky _]h k\hckl\h jZafy]qZlvky b \ jZkieZ\e_gghf \b^_ ijbgbfZlv ex[mx nhjfm dhlhjZy khojZgy_lky ijb aZklu\Zgbb kl_deZ GZ wlhf hkgh\Zgh ijhba\h^kl\h ihkm^u b ^jm]bo ba^_ebc ba kl_deZ >hihegbl_evgu_ dZq_kl\Z kl_dem ijb^Zxl jZaebqgu_ ^h[Z\db LZd \\_^_gb_f hdkb^Z k\bgpZ ihemqZxl ojmklZevgh_ kl_deh hdkb^ ojhfZ hdjZrb\Z_l kl_deh \ a_e_guc p\_l hdkb^ dh[ZevlZ ² \ kbgbc b l ^ H[eZklv ijbf_g_gby kl_deZ hq_gv h[rbjgZ Wlh hdhggh_ [mluehqgh_ eZfih\h_ a_jdZevgh_ kl_deh kl_deh hilbq_kdh_ ² hl kl_dhe hqdh\ ^h kl_dhe nhlhdZf_j ebgau [_kqbke_gguo ijb[hjh\ ² hl fbdjhkdhih\ ^h l_e_kdhih\
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