... H2SO4 0,28M thu c dung dch X v 8, 736 lớt khớ H2 ( ktc). Cụ cn dung dch X thu c lng mui khan lA. 38, 93 gam. B. 103 ,85 gam. C. 25,95 gam. D. 77 ,86 gam.Cõu 31: t chỏy hon ton mt hirocacbon X thu ... propen v propin. Khi t chỏy hon ton 0,1 mol X, tng khi lng ca CO2 v H2O thu c lA. 20,40 gam. B. 18, 60 gam. C. 18, 96 gam. D. 16 ,80 gam.Cõu 20: Khi crackinh hon ton mt th tớch ankan X thu c ba ... phn ng thu c khi lng x phũng lA. 17 ,80 gam. B. 18, 24 gam. C. 16, 68 gam. D. 18, 38 gam.Cõu 27: t chỏy hon ton 1 lớt hn hp khớ gm C2H2 v hirocacbon X sinh ra 2 lớt khớ CO2 v 2 lớt hi H2O (cỏc th...