Ngày tải lên :
29/09/2015, 22:05
... -0,03*2= 56, 39 (g) 0,02 * 1 36 * 100 = 4,82% 56, 39 0,01 * 111 * 100 = 1,97% C% CaCl2 = 56, 39 0,09 * 36, 5 * 100 = 5,83% C% HCl = 56, 39 (0.5) C% ZnCl2 = (0.25) - HT - UBND TNH THI NGUYấN THI CHN HC SINH ... 2.431,5 = 165 2,7 EC-H = 413,175 (kJ/mol) 2CO2 + 3H2O H6 C2H6 + 3,5O2 3H2O U 1,5O2 + 3H2 -3 H2 2CO2 U 2O2 + 2C(r) -2 H3 2C(r) U 2C(k) H4 3H2 U 6H H5 C2H6 U 2C(k) + 6H H = EC-C+6EC-H EC-C+ 6EC-H ... ddH2O2 + m SO2 + m H2O = 100.1 + 0,075 .64 + 0,1.18 = 1 06, 6 (g) Vy: VI 3,5 0,075.98.100 = 6, 695 (%) 1 06, 6 0,075.34.100 C%H2O2 d = = 2,392 (%) 1 06, 6 0,5 C%H2SO4 = 0,5 Ba + H2O Ba(OH)2 + H2 Na + H2O...