"b2o310" - 1 õppematerjal

Keemia eksami vastused

­ 10 24 ( , . ) . ­ (), 2 , , ­ . , . ­ . / (2 ). () , - , . C. ­ 2 , , (, ) , , . ( ) ­ (H2O, C2H5OH, NaCl). - . ( 80-100%) ­ (HCl, HBr, HI, HNO3, H2SO4), 1 2 (NaOH, KOH, Ca(OH)2,), . . ( < 30%) ­ , NH3, (HCOOH, CH3COOH), (HF, H2S, HCN, H2CO3, H3PO4, H2SiO3). . ­ 1 298,15 . ­ ( ) .{ :(100%SiO2)-, ; Pyrex: (SiO260-80%, B2O310-25%, Al2O3)-, , ; : (SiO275%, Na2O15%, CaO10%)- , , , }. ­ , . . T. - , , ( 1 (/)). ­ , ( 760 ­ t=100°, 250 ­ t=70°). . ­ , (/ ). . - , ( - ) X. ­ , (H, O, S, Fe, .). - , , , , . - , . - . ­ , (, , .). - . . - . 22 + 2 22 + ( = -584 , = -292 / 2) () (25 298.15 , 1 ). (S, /K ), -